# Those Who Cross the Line

Those Who Cross the Line (Korean: 선을 넘는 녀석들) is a South Korean television entertainment program and televised on MBC.
Season 1 was aired every Friday, starting 30 March and ending on 14 September 2018.
Season 2 was aired every Saturday, starting 16 February and ending on 23 March 2019.
Season 3 was aired every Sunday, starting 18 August 2019 and ending on 13 December 2020.
Season 4 was aired every Sunday, starting 25 April 2021 with a new master and another guest as X. It was changed to Wednesday as of 1 December 2021 and the show ended on 22 December 2021.

## Overview
### Season 1

The program is a 20-episode series program that compares and contrasts different histories, cultures, and arts as if they resemble the two nations facing the border. It is a new concept that takes away from everyday life that can only be felt locally to a unique history. The program was originally a 16 episodes series but got extended due to its popularity.

### Season 2

The second season, Those who cross the line - Korean Peninsula (Korean: 선을 넘는 녀석들 - 한반도편; RR: Seon-eul Neomneun Nyeoseogdeul - Hanbandopyeon), is a 6-episode series program that compares and contrasts on the history of Korean Peninsula and to commemorate the 100th anniversary of March 1st Movement and Provisional Government. This second season is based on the success of the first season and Seol Min-seok's wishes to visit/cross the Military Demarcation Line (MDL) as mentioned in the opening premier of the Season 2 when the five cast members met. Before visiting the MDL, the cast will learn about the history of Korean Peninsula, particularly on the topics on "Those who tried to protect their borders" from history teacher, Seol Min-seok and invited guests.

### Season 3

The third season, Those who cross the line - Returns (Korean: 선을 넘는 녀석들 리턴즈; RR: Seon-eul Neomneun Nyeoseogdeul-liteonjeu), is the continuation with the success of the Season 2 and is to visit the hidden historical sites all over South Korea. The excitement is the journey to find the true story that cannot be learned from history books. Furthermore, it is expected that it will make a meaningful move that draws together the stories of yesterday, today, and tomorrow that we have not known yet. In addition, invited guests will visit each historical site to make the Korean history exploration more enriching and enjoyable.

### Season 4

The fourth season, Those who cross the line - Master X (Korean: 선을 넘는 녀석들 : 마스터-X; RR: Seon-eul Neomneun Nyeoseogdeul-ma-seu-teo-X), is a comeback with an expanded version that crosses the history as well as various 'line of knowledge'. A new world of knowledge to be with the best masters in Korea! Who is the unknown Master X who will cross the line of knowledge every week, such as History vs Science, History vs Psychology and History vs Art.

## Airtime

| Season | Airdate | Broadcast Start Time (KST) | Broadcast Start Time (KST) |
| 1 | 30 March – 14 September 2018 | Fridays at 9:50 pm | Fridays at 9:50 pm |
| 2 | 16 February – 23 March 2019 | Part 1 | Saturdays at 6:25 pm |
| 2 | 16 February – 23 March 2019 | Part 2 | Saturdays at 7:10 pm |
| 3 | 18 August 2019 – 13 December 2020 | Part 1 | Sundays at 9:05 pm |
| 3 | 18 August 2019 – 13 December 2020 | Part 2 | Sundays at 9:50 pm |
| 4 | 25 April – 21 November 2021 | Part 1 | Sundays at 9:10 pm |
| 4 | 25 April – 21 November 2021 | Part 2 | Sundays at 9:50 pm |
| 4 | 1 – 22 December 2021 | Wednesdays at 9:00 pm | Wednesdays at 9:00 pm |

## Cast
### Season 1

| Name | Episode | Ref/Notes |
| Kim Gu-ra | Ep. 1 – 20 | |
| Seol Min-seok | Ep. 1 – 20 | |
| Lee Si-young | Ep. 1 – 16 | Lee exited from the show after episode 16, as the original filming of the program was for 16 episodes, and she is filming for her new show. Due to the popularity, the program got extended as explained in episode 17 by Kim Gu-ra. |

### Season 2

| Name | Episode |
| Jun Hyun-moo | Ep. 1 – 6 |
| Seol Min-seok | Ep. 1 – 6 |
| Moon Geun-young | Ep. 1 – 6 |
| Yoo Byung-jae | Ep. 1 – 6 |
| Daniel Lindemann | Ep. 1 – 6 |

### Season 3

| Name | Episode |
| Jun Hyun-moo | Ep. 1 – 67 |
| Yoo Byung-jae | Ep. 1 – 67 |
| Kim Jong-min (Koyote) | Ep. 1 – 67 |
| Seol Min-seok | Ep. 1 – 67 |

### Season 4

| Name | Episode | Role |
| Jun Hyun-moo | Ep. 1 – 32 | Host |
| Yoo Byung-jae | Ep. 1 – 32 | Host |
| Kim Jong-min (Koyote) | Ep. 1 – 32 | Host |
| Shim Yong-hwan | Ep. 1 – 32 | History Master |
| Kim Kyung-il | Ep. 1 – 32 | Psychology Master |
| Kim Sang-wook | Ep. 1 – 32 | Science Master |

## Episodes
### Season 1

| Episode # | Trip # | Original Airdate Date | Location | Guests | Ref/Notes |
| 1 – 4 | 1 | 30 March 2018 6 April 2018 13 April 2018 20 April 2018 | Mexico City & Tijuana (Mexico) (30 March - 20 April) + San Diego (United States) (20 April) | Tyler Rasch Christian Burgos Yoo Byung-jae | |
| — | No broadcast on 27 April due to special broadcast of Inter Korea Summit |
| 5 – 8 | 2 | 4 May 2018 11 May 2018 18 May 2018 25 May 2018 | Paris & Strasbourg (France) (4 May – 18 May) + Baden-Württemberg & Berlin (Germany) (18 May – 25 May) | Cha Eun-woo (Astro) Daniel Lindemann Yoo Byung-jae | |
| — | No broadcast on 1 June due to International Friendly soccer match between South Korea & Bosnia-Herzegovina |
| 9 – 12 | 3 | 8 June 2018 22 June 2018 29 June 2018 13 July 2018 | Amman, Jerash, Ma'in Hot Springs & Petra (Jordan) (8 June, 22 June) + Jerusalem & Dead Sea (Israel-Palestine) (29 June, 13 July) | Minho (Shinee) MC Gree | No broadcast on 15 June and 6 July due to 2018 FIFA World Cup matches Live telecast |
| 13 – 16 | 4 | 20 July 2018 27 July 2018 3 August 2018 10 August 2018 | Barcelona (Spain) (20 July - 3 August) + Gibraltar (British Overseas Territories) (3 August) + Morocco & Portugal (10 August) | P.O (Block B) Lee Su-hyun (AKMU) | Lee Si-young's last trip |
| 17 – 20 | 5 | 17 August 2018 24 August 2018 7 September 2018 14 September 2018 | Florence, Venice & Trieste (Italy) (17 – 24 August, 7 – 14 September) + Lake Bled (Slovenia) (14 September) | Solbi Yura (Girl's Day) Yoo Byung-jae | No broadcast on 31 August due to 2018 Asian Games live telecast. |

### Season 2

| Episode # | Original Airdate Date | Location/Place visited | Historical Events | Special Guest(s) | Ref/Notes |
| 1 | 16 February 2019 | Ganghwa Island Gwangseongbo Fortress (광성보) (江華 廣城堡) Samrang Fortress (강화 삼랑성) (江華 三郞城) Ganghwa Peace Observatory (강화평화전망대) (江华和平观察站) | 1871 Korean Campaign French Campaign against Korea, 1866 1884 Gapsin Coup | — | |
| 2 | 23 February 2019 | Ganghwa County Yeunsangun's house of exile Gyodong Island | First Literati Purge of 1498 Second Literati Purge of 1504 Jungjong coup in 1506 | Kim Young-ok | Kim Young-ok talk about her personal experiences in Korea under Japanese rule, Korean War and family reunion with her eldest brother (North Korean) whom she has not seen for 50 years (in 2000) since the start of Korean War. |
| 2 | 23 February 2019 | Jeju Island Samseonghyeol Shrine (삼성혈) (三姓穴) Yeonbukjeong (연북정) (戀北亭) Jocheon Monument Street (조천비석거리) (朝天石碑街) | Donghak Peasant Revolution | — | All the five cast members are together for the first time since the premier opening of the show. |
| 3 | 2 March 2019 | Jeju Island Mount Songak (송악산) Japanese-made Cave Encampment at Sesaloleum (제주 셋알오름 일제 동굴진지) Alddreu Airfield (알뜨르 비행장) Socotra Rock (이어도) (離於島) Mount Sanbangsan (산방산) (山房山) Jeongbang Waterfall (정방폭포) (正房瀑布) | Beopjeongsa Movement Jeju uprising Hendrick Hamel in the Joseon Korea | Go Doo-shim | |
| 4 | 9 March 2019 | Jeju Island Jeongbang Waterfall (정방폭포) (正房瀑布) Yeongmowon (영모원) (慰靈壇) | Jeju uprising | — | |
| 4 | 9 March 2019 | Tokyo, Japan The Classic house at Asakasa Prince Hibiya Park Ichigaya Prison (Commemorative Tombstone) | Triple Intervention February 8 Declaration of Independence Sakuradamon Incident (1932) Kantō Massacre | Choi Hee-seo | |
| 5 | 16 March 2019 | Tokyo, Japan Tokyo Station | Five Eulsa Traitors Seven Jeongmi Traitors 8 pro-Japanese Traitors | — | |
| 5 | 16 March 2019 | Kyoto, Japan Koryo Museum of Art Doshisha University - Yun Dong-ju Memorial Yodo River | Era of Imperialistic Cultural Cleansing | — | |
| 5 | 16 March 2019 | South Korea Cheorwon County | — | — | |
| 6 | 23 March 2019 | Cheorwon County Igrl-ri Labor Party Headquarter (Former North Korea building) Baengmagoji Station Korean Demilitarized Zone Civilian Control Line Southern Limit Line Arrow Head Ridge Guard Post Military Demarcation Line | Korean War Battle of Inchon Hungnam evacuation Third Battle of Seoul Battle of Arrow Head Ridge | Kim Ji-yoon (International Political Specialist) | |
| Episode # | Original Airdate Date | Location/Place visited | Historical Events | Special Guest(s) | Ref/Notes |

### Season 3

| Episode # | Original Airdate Date | Location/Place visited/Event | Special Guest(s) | Ref/Notes |
| 1 | 18 August | Seoul Gyeongbokgung Palace Changdeokgung Palace Deoksugung Palace (Jungmyeongjeon) | Choi Hee-seo Yuji Hosaka | |
| 2 | 25 August | Busan Taejongdae Dongnae-eupseong Imjin Warran History Museum at Suan Station of Busan Metro Line 4 Yongdusan Park (Busan Tower) Joseon Tongsinsa | Cho Jin-woong Sandeul | |
| 3 | 1 September | Seoul History tour Chōsen Shrine Former residence of Resident-General of Korea Mitsukoshi Department Store Gyeonggyojang | Choi Hee-seo | |
| 4 | 8 September | History of Silla (Gyeongju, North Gyeongsang Province) Gyeongju National Museum Tomb of King Muyeol Tomb of General Kim Yu-sin Hwangnyong Temple Tomb of Munmu of Silla Gameunsaji Temple Gyeongju National Research Institute of Cultural Heritage | Moon Geun-young | |
| 5 | 15 September | History of Silla (Gyeongju, North Gyeongsang Province) Gyeongju National Museum Tomb of King Muyeol Tomb of General Kim Yu-sin Hwangnyong Temple Tomb of Munmu of Silla Gameunsaji Temple Gyeongju National Research Institute of Cultural Heritage | Moon Geun-young | |
| 5 | 15 September | History of Silla (Gyeongju, North Gyeongsang Province) Gyeongju National Museum Tomb of King Muyeol Tomb of General Kim Yu-sin Hwangnyong Temple Tomb of Munmu of Silla Gameunsaji Temple Gyeongju National Research Institute of Cultural Heritage | Solbi | |
| 6 | 22 September | Tongyeong, South Gyeongsang Province Samdo navy Sebyeonggwan Hansan Island | Kim Myung-min Kim In-kwon | |
| 7 | 29 September | Imjin War (Jinju, South Gyeongsang Province) Jinjuseong Fortress Namhae Yi Sunshin Sunguk Park | Lee Jin-hyuk (UP10TION) | |
| 8 | 6 October | Baekje Historic Areas (Gongju & Buyeo County, South Chungcheong Province and Iksan, North Jeolla Province) Songsan-ri Ancient Tombs Buyeo Jeongnimsaji Buyeo National Museum (ft. Gilt-bronze Incense Burner of Baekje and Geumdong Guanyin Bodhisattva statue) Baekje Cultural Land Nakhwaam Stone Mireuksaji Stone Pagoda Iksan Wanggung-ri ruins | Park Chan-ho Mijoo (Lovelyz) | |
| 9 | 13 October | Baekje Historic Areas (Gongju & Buyeo County, South Chungcheong Province and Iksan, North Jeolla Province) Songsan-ri Ancient Tombs Buyeo Jeongnimsaji Buyeo National Museum (ft. Gilt-bronze Incense Burner of Baekje and Geumdong Guanyin Bodhisattva statue) Baekje Cultural Land Nakhwaam Stone Mireuksaji Stone Pagoda Iksan Wanggung-ri ruins | Park Chan-ho Han Sun-hwa | |
| 10 | 20 October | Panmunjom Events and history of Joint Security Area | Lee Jin-hyuk (UP10TION) Park Yeon-kyung | |
| 11 | 27 October | Panmunjom Events and history of Joint Security Area | Lee Jin-hyuk (UP10TION) Park Yeon-kyung | |
| 12 | 3 November | The True Record of the Joseon Dynasty (Odaesan, Pyeongchang) The Annals of the Joseon Dynasty Woljeongsa Temple Sangwonsa Temple | Jeon In-hwa | |
| 13 | 10 November | Trans–Siberian Railway (Vladivostok, Russia) Ussuriysk Oversea Independence Movement in Vladivostok | Choi Hee-seo | |
| 14 | 17 November | Trans–Siberian Railway (Vladivostok, Russia) Ussuriysk Oversea Independence Movement in Vladivostok | Choi Hee-seo | |
| 15 | 24 November | Danjong of Joseon (Yeongwol, Gangwon Province) Yeongwol Seondol King Danjong's residence during exile Jagyuru and Gwanpungheon Tomb of King Danjong Changjeolsa Temple | Jeong Yu-mi | |
| 16 | 1 December | Danjong of Joseon (Yeongwol, Gangwon Province) Yeongwol Seondol King Danjong's residence during exile Jagyuru and Gwanpungheon Tomb of King Danjong Changjeolsa Temple | Jeong Yu-mi | |
| 17 | 8 December | Korean Independence Movement (Shanghai, China) Provisional Government of the Republic of Korea's Temporary Office Building Yun Bong-gil - Hongkew Park Bombing Kim Gu's Independence Movement in China | Han Go-eun Yoon Joo-bin | |
| 18 | 15 December | Korean Independence Movement (Shanghai, China) Provisional Government of the Republic of Korea's Temporary Office Building Yun Bong-gil - Hongkew Park Bombing Kim Gu's Independence Movement in China | Han Go-eun Yoon Joo-bin Kim Yong-man (Kim Gu's great grandson) | |
| 19 | 22 December | Korean Independence Movement (Shanghai, China) Provisional Government of the Republic of Korea's Temporary Office Building Yun Bong-gil - Hongkew Park Bombing Kim Gu's Independence Movement in China | Han Go-eun Yoon Joo-bin Kim Yong-man (Kim Gu's great grandson) | |
| 19 | 22 December | Confucian scholars of Andong (Andong, North Gyeongsang Province) Dosan Seowon | Jeong Yu-mi | |
| — | No new episode on 29 December due to 2019 MBC Entertainment Awards live telecast | No new episode on 29 December due to 2019 MBC Entertainment Awards live telecast | No new episode on 29 December due to 2019 MBC Entertainment Awards live telecast | No new episode on 29 December due to 2019 MBC Entertainment Awards live telecast |
| Episode # | Original Airdate Date | Location/Place visited/Event | Special Guest(s) | Ref/Notes |
| 20 | 5 January | Confucian scholars of Andong (Andong, North Gyeongsang Province) The Korean Studies Institute Byeongsanseowon Confucian Academy Yi Yuksa (ft. Poetic work during Korea Independence Movement) | Jeong Yu-mi | |
| 21 | 12 January | Confucian scholars of Andong (Andong, North Gyeongsang Province) The Korean Studies Institute Byeongsanseowon Confucian Academy Yi Yuksa (ft. Poetic work during Korea Independence Movement) | Jeong Yu-mi Lee Ok-bi | |
| 21 | 12 January | Busan Exploration Special Dong-A University Seokdang Museum (ft. Relics excavated from Yangsan Geumjoong) United Nations Memorial Cemetery Yeongdo Bridge 40-step stairway (ft. the historical stairway and cultural centre) | Song Hae Yook Joong-wan | |
| 22 | 19 January | Busan Exploration Special Dong-A University Seokdang Museum (ft. Relics excavated from Yangsan Geumjoong) United Nations Memorial Cemetery Yeongdo Bridge 40-step stairway (ft. the historical stairway and cultural centre) | Song Hae Yook Joong-wan | |
| — | No new episode on 26 January due to New Year Special 2020 Songan Concert telecast. | No new episode on 26 January due to New Year Special 2020 Songan Concert telecast. | No new episode on 26 January due to New Year Special 2020 Songan Concert telecast. | No new episode on 26 January due to New Year Special 2020 Songan Concert telecast. |
| 23 | 2 February | Sejong Science Special (Seoul) National Palace Museum of Korea | Kim Sang-wook | |
| 24 | 9 February | Sejong Science Special (Seoul) National Palace Museum of Korea | Kim Sang-wook | |
| 25 | 16 February | Provisional Government of the Republic of Korea (Chongqing, China) Yi Dong-nyeong - (ft. Yi Dong-nyeong's residence & the footsteps of the 80th anniversary of the Korean Liberation Army) | Han Go-eun | |
| 26 | 23 February | Provisional Government of the Republic of Korea (Chongqing, China) Yi Dong-nyeong - (ft. Yi Dong-nyeong's residence & the footsteps of the 80th anniversary of the Korean Liberation Army) | Han Go-eun | |
| 27 | 1 March | March 1st Movement Special (Seoul) Independence movement theme at Anguk Station Boseongsa (ft. Declaration of Independence) Cheondogyo Central Bridge Tapgol Park Seodaemun Prison History Hall | Jeong Yu-mi | |
| 28 | 8 March | March 1st Movement Special (Seoul) Independence movement theme at Anguk Station Boseongsa (ft. Declaration of Independence) Cheondogyo Central Bridge Tapgol Park Seodaemun Prison History Hall | Jeong Yu-mi | |
| 28 | 8 March | Sejong Hangul Special (Seoul) National Hangeul Museum MBC Sangam-dong Studio (History Golden Bell) Ju Si-gyeong - Standardizing Korean Language Hangul Society Incident | Ddotty | |
| 29 | 15 March | Sejong Hangul Special (Seoul) National Hangeul Museum MBC Sangam-dong Studio (History Golden Bell) Ju Si-gyeong - Standardizing Korean Language Hangul Society Incident | Ddotty | |
| 30 | 22 March | Qing invasion of Joseon (Seoul) Changuimun Namhansanseong Samjeondo Monument | Kim Kang-hoon | |
| 31 | 29 March | Qing invasion of Joseon (Seoul) Changuimun Namhansanseong Samjeondo Monument | Kim Kang-hoon | |
| 32 | 5 April | Sukjong of Joseon (Seoul) Seooreung - Royal tomb of the Joseon Dynasty (ft. the tomb of Gyeongneung and Myeongneung) Land Palace | Jeong Yu-mi | |
| 33 | 12 April | Sukjong of Joseon (Seoul) Seooreung - Royal tomb of the Joseon Dynasty (ft. the tomb of Gyeongneung and Myeongneung) Land Palace | Jeong Yu-mi | |
| 34 | 19 April | April Revolution Unification Education Center April 19 National Democratic Cemetery Namsan Literature House Former Namyeong-dong's Anti-Communist Office | Kim In-kwon | |
| 35 | 26 April | April Revolution Unification Education Center April 19 National Democratic Cemetery Namsan Literature House Former Namyeong-dong's Anti-Communist Office | Kim In-kwon | |
| 35 | 26 April | Joseon Dynasty Special - Yeongjo Exploration Changgyeonggung (ft. Honghwamun (main gate) and Munjeongjeon (council hall)) Jangchungdan Park - Supyogyo bridge | Rowoon (SF9) Kim Kang-hoon | |
| 36 | 3 May | Joseon Dynasty Special - Yeongjo Exploration Changgyeonggung (ft. Honghwamun (main gate) and Munjeongjeon (council hall)) Jangchungdan Park - Supyogyo bridge | Rowoon (SF9) Kim Kang-hoon | |
| 37 | 10 May | Joseon Dynasty Special - Jeongjo Exploration Changdeokgung (ft. Buyongji and Kyujanggak) | Rowoon (SF9) Kim Kang-hoon | |
| 37 | 10 May | Joseon Dynasty Special - The 1795 Eight Days Parade Hwaseong Fortress - Janganmun (North gate) Hwaseong Haenggung Palace (ft. Sinpoongru, Naknamheon and Bongsudang) | Kim Se-jeong | |
| 38 | 17 May | Joseon Dynasty Special - The 1795 Eight Days Parade Hwaseong Fortress - Janganmun (North gate) Hwaseong Haenggung Palace (ft. Sinpoongru, Naknamheon and Bongsudang) | Kim Sang-wook | |
| 38 | 17 May | Joseon Dynasty Special - The 1795 Eight Days Parade Hwaseong Fortress - Janganmun (North gate) Hwaseong Haenggung Palace (ft. Sinpoongru, Naknamheon and Bongsudang) | Kim Se-jeong Park Yeong-tak | |
| 39 | 24 May | Dasan Ecological Park Jeong Yakyong | Kim Se-jeong Park Yeong-tak | |
| 39 | 24 May | Donghak Peasant Revolution | Jeong Yu-mi Kim Ho-jung | |
| 40 | 31 May | Donghak Peasant Revolution | Jeong Yu-mi Kim Ho-jung | |
| 41 | 7 June | UNESCO World Heritage Special Jongmyo Shrine Heojun Museum Gyeojangbawi Rock | Jun Kwang-ryul | |
| 42 | 14 June | UNESCO World Heritage Special Jongmyo Shrine Heojun Museum Gyeojangbawi Rock | Jun Kwang-ryul | |
| 42 | 14 June | Special feature of the 70th anniversary of the Korean War Namdaemun Hangang Bridge War Memorial of Korea | Sung Yu-ri | |
| 43 | 20 June | Special feature of the 70th anniversary of the Korean War Namdaemun Hangang Bridge War Memorial of Korea | Sung Yu-ri | |
| 43 | 20 June | Koreans on the battlefield during the Second World War (Saipan) Mount Tapochau | Kim Hye-yoon | |
| 44 | 27 June | Koreans on the battlefield during the Second World War (Saipan) Mount Tapochau | Kim Hye-yoon | |
| 45 | 5 July | Koreans on the battlefield during the Second World War (Tinian) Sugar King Park Last Japanese Command | Kim Hye-yoon | |
| 46 | 12 July | 1st Anniversary Special (Ulleungdo & Dokdo) | Jeong Yu-mi | |
| 47 | 19 July | 1st Anniversary Special (Ulleungdo & Dokdo) | Jeong Yu-mi | |
| 48 | 26 July | Ancient Korean Social Class System Korean Folk Village | Alberto Mondi Shin Ji (Koyote) | |
| 49 | 2 August | Ancient Korean Social Class System Korean Folk Village | Alberto Mondi Shin Ji (Koyote) | |
| 49 | 2 August | Ancient Korean Social Class System Seongsu-dong Valley | Kim Se-jeong Park Yeong-tak | |
| 50 | 9 August | Museum is alive Special Feature National Museum of Korea | Han Ji-hye | |
| 51 | 16 August | Liberation Day Massacre in Hwaseong, Gyeonggi Province Pro-Japanese | Choi Hee-seo | |
| 52 | 23 August | Liberation Day Massacre in Hwaseong, Gyeonggi Province Pro-Japanese | Choi Hee-seo | |
| 53 | 30 August | Jeong Mong-ju and Jeong Do-jeon rivalry Yeonju flight Buseoksa Temple Muryangsujeon (Yeongju) The beginning of Joseon | Choi Soo-jong | |
| 54 | 6 September | Jeong Mong-ju and Jeong Do-jeon rivalry Yeonju flight Buseoksa Temple Muryangsujeon (Yeongju) The beginning of Joseon | Choi Soo-jong | |
| 55 | 13 September | Joseon's last rivalry: Gojong and Heungseon Daewongun Conflict between the rich Seokpajeong - villa of Heungseon Daewongun Unhyeongung - former residence of Heungseon Daewongun Gojong's new rival emerged Wongudan | Moon Ga-young | |
| 56 | 20 September | Joseon's last rivalry: Gojong and Heungseon Daewongun Conflict between the rich Seokpajeong - villa of Heungseon Daewongun Unhyeongung - former residence of Heungseon Daewongun Gojong's new rival emerged Wongudan | Moon Ga-young | |
| 57 | 27 September | The Age of Three Kingdom | Choi Soo-jong | |
| — | No new episode on 4 October due to Chuseok Special program telecast. | No new episode on 4 October due to Chuseok Special program telecast. | No new episode on 4 October due to Chuseok Special program telecast. | No new episode on 4 October due to Chuseok Special program telecast. |
| 58 | 11 October | Joseon's sovereignty | Jin Se-yeon | |
| 59 | 18 October | 100th Anniversary of the Battle of Cheongsanri | Song Il-gook | |
| 60 | 25 October | 100th Anniversary of the Battle of Cheongsanri | Song Il-gook | |
| 61 | 1 November | Parallel Theory of Plagues | Jin Tae-hyun | |
| 62 | 8 November | Finding Sisters Who Have Crossed the Line of Prejudice Gangneung (Shinsaimdang & Heonanseolheon) Hwang Jini | Noh Sa-yeon | |
| 63 | 15 November | Finding Sisters Who Have Crossed the Line of Prejudice Gangneung (Shinsaimdang & Heonanseolheon) Hwang Jini | Noh Sa-yeon | |
| 63 | 15 November | Real Men Special Goryeo military regime Sambyeolcho | Jung Tae-woo | |
| 64 | 22 November | Real Men Special Goryeo military regime Sambyeolcho | Jung Tae-woo | |
| 65 | 29 November | Real Men Special Goryeo military regime Sambyeolcho | Jung Tae-woo | |
| 66 | 6 December | Finding the Secret of Modern History 10.26 incident Yeouido Park 12.12 Military Insurrection | Jin Se-yeon | |
| 67 | 13 December | Finding the Secret of Modern History 10.26 incident Yeouido Park 12.12 Military Insurrection | Jin Se-yeon | |
| 67 | 13 December | There is no country for princesses Princess Deokhye | Park Ha-sun | |
| Episode # | Original Airdate Date | Location/Place visited/Event | Special Guest(s) | Ref/Notes |

### Season 4

| Episode # | Original Airdate Date | Collaboration | Theme/Location/Place visited/Event | Guest(s) | Ref/Notes |
| 1 | 25 April 2021 | Psychology | Between the Tyrant and the Seonggun – Yeonsan-gun vs Jeongjo Seonjeongneung – Changdeokgung Palace Back Garden of Changdeok Palace – Kyujanggak | Kim Kyung-il | |
| 2 | 2 May 2021 | Psychology | Between the Tyrant and the Seonggun – Yeonsan-gun vs Jeongjo Seonjeongneung – Changdeokgung Palace Back Garden of Changdeok Palace – Kyujanggak | Kim Kyung-il | |
| 3 | 9 May 2021 | Science | The X-Files That Changed the History of the Korean Peninsula Hwajinpo Castle Goseong County (Gangwon Province) – Unification Observatory | Kim Sang-wook | |
| 4 | 16 May 2021 | History | Remembrance of 18 May Chonnam National University Geumnam-ro Former Main Building Gwangju Jeollanam-do Office May 18th National Cemetery | John Alderman Linton | |
| 5 | 23 May 2021 | Psychology | Spy Hongjecheon, Bugaksan & Cheongundae | Kim Kyung-il | |
| 6 | 30 May 2021 | Psychology | Vengeance Blood Battle Top Secret Project, Silmido Island, Hell's Island Silmido | Kim Kyung-il | |
| 7 | 6 June 2021 | Science | Learning Journey No. 1 (Gyeongju - Moonlit Night of Shilla) Gyeongju National Museum Jjoksaem District Cheomseongdae | Kim Sang-wook | |
| 8 | 13 June 2021 | Science & Arts | Find the Science Code! (Kookjung Park - Treasure Hunter Edition) National Museum of Korea | Kim Sang-wook | |
| 9 | 20 June 2021 | History & Psychology | Who is this newcomer? Baek Baek Religion Incident Dongducheon | Kim Kyung-il Pyo Chang-won | |
| 10 | 27 June 2021 | History | 6.25 Special In Search of Hidden Heroes We Didn't Know Jangseungpo Port Hungnam evacuation UN Memorial Park | Kim Sang-wook | |
| 11 | 4 July 2021 | History & Psychology | "I Can Be No. 1" by Na Hye-seok, who wrote the history of the Joseon first | Shim Yong-hwan Park Jae-yeon | |
| 12 | 11 July 2021 | History & Crime | Korean version of the CSI forensic unit war on crime | Kwon Il-yong | |
| 13 | 18 July 2021 | History & Environment | 1 °C warning, the last SOS from the Earth special Gyeongsin Great Famine | Shim Yong-hwan Jo Cheon-ho | |
| — | No new episode from 25 July to 1 August due to live telecast of Tokyo Olympics. | No new episode from 25 July to 1 August due to live telecast of Tokyo Olympics. | No new episode from 25 July to 1 August due to live telecast of Tokyo Olympics. | No new episode from 25 July to 1 August due to live telecast of Tokyo Olympics. | No new episode from 25 July to 1 August due to live telecast of Tokyo Olympics. |
| 14 | 8 August 2021 | History & Psychology | Could Be No. 1 Chosun superstar Yoon Shim-deok | Park Jae-yeon | |
| 15 | 15 August 2021 | History | Liberation Day Special: Sohn Ki-jeong, the first Korean gold medalist. | Seo Kyung-duk | |
| 16 | 22 August 2021 | History & Science | Our relics that will overturn the history of the world! "History has been turned upside down" | Shim Yong-hwan Kim Sang-wook | |
| 17 | 29 August 2021 | History & Psychology | Gyeongsul Gukchi Special: Story of pro-Japanese policemen brutality Cheonan Independence Hall | Kim Kyung-il | |
| 18 | 5 September 2021 | History & Science | History of the volcanic eruption of Mt. Baekdu | Kim Sang-wook Shim Yong-hwan | |
| 19 | 12 September 2021 | History & Psychology | Chun Doo-hwan's Samchung re-education camp | Shim Yong-hwan Kim Kyung-il | |
| — | No new episode on 19 September due to Chuseok special movie telecast. | No new episode on 19 September due to Chuseok special movie telecast. | No new episode on 19 September due to Chuseok special movie telecast. | No new episode on 19 September due to Chuseok special movie telecast. | No new episode on 19 September due to Chuseok special movie telecast. |
| 20 | 26 September 2021 | Classic Literature & Pansori | Lee Mongryong and Seong Chunhyang | Lee Bong-geun Kim Gemma | |
| 21 | 3 October 2021 | History & Drug | History of drugs in Korea | Kim Sang-wook | |
| 22 | 10 October 2021 | History & Science | History of Space Exploration (Go to the Future) Naro Space Center | Kim Sang-wook Shim Chae-kyung | |
| 23 | 17 October 2021 | History & Science | History of Space Exploration (Go to the Future) Naro Space Center | Kim Sang-wook Shim Chae-kyung | |
| 23 | 17 October 2021 | History & Terror | 9/11 terror and Osama bin Laden | Park Hyun-do Kim Kyung-il Kim Sang-wook | |
| 24 | 24 October 2021 | History & Economics | Let's Play, Economy | Kim Dong-hwan Shim Yong-hwan | |
| 25 | 31 October 2021 | History & Army | Brutality of Deserter Pursuit (DP) | Attorney Park Joon-young | |
| 26 | 7 November 2021 | History & Criminal Psychology | The Age of Assassination | Pyo Chang-won Park Tae-gyun | |
| 27 | 14 November 2021 | History & Criminal Psychology | The Age of Assassination | Pyo Chang-won Park Tae-gyun | |
| 28 | 21 November 2021 | Science & Mystery | UFO & Alien | Kim Sang-wook | |
| — | Change of broadcast schedule to Wednesday starting 1 December. | Change of broadcast schedule to Wednesday starting 1 December. | Change of broadcast schedule to Wednesday starting 1 December. | Change of broadcast schedule to Wednesday starting 1 December. | Change of broadcast schedule to Wednesday starting 1 December. |
| 29 | 1 December 2021 | History | Joseon Super Heroes - Hong Gil-dong | Kim Gemma Kim Dahyun | |
| 30 | 8 December 2021 | History | Joseon Super Heroes - Jeon Woo-chi | Kim Gemma Kim Dahyun | |
| 31 | 15 December 2021 | History | Our Twisted Hero | Song Hyeong-seok Kim Gemma | |
| 32 | 22 December 2021 | History & Psychology | A precious vote that will change the fate of Korea! <Choice 2022> | Pyo Chang-won Lee Ji-sun | |
| Episode # | Original Airdate Date | Collaboration | Theme/Location/Place visited/Event | Guest(s) | Ref/Notes |

## Ratings

In the ratings below, the highest rating for the show will be in red and the lowest rating for the show will be in blue for each season or year.

### Season 1

| 2018 | 2018 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 1 | 30 March | 3.3% |
| 2 | 6 April | 4.3% |
| 3 | 13 April | 2.9% |
| 4 | 20 April | 4.2% |
| 5 | 4 May | 4.6% |
| 6 | 11 May | 5.8% |
| 7 | 18 May | 4.6% |
| 8 | 25 May | 4.1% |
| 9 | 8 June | 5.7% |
| 10 | 22 June | 5.6% |
| 2018 | 2018 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 11 | 29 June | 4.6% |
| 12 | 13 July | 4.1% |
| 13 | 20 July | 4.4% |
| 14 | 27 July | 4.1% |
| 15 | 3 August | 3.3% |
| 16 | 10 August | 3.2% |
| 17 | 17 August | 4.2% |
| 18 | 24 August | 5.2% |
| 19 | 7 September | 5.9% |
| 20 | 14 September | 4.7% |

### Season 2

The show will be aired in two parts. Only the higher rating of the episode will be shown.
| 2019 | 2019 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 1 | 16 February | 6.2% |
| 2 | 23 February | 5.6% |
| 3 | 2 March | 6.5% |
| 4 | 9 March | 6.2% |
| 5 | 16 March | 5.3% |
| 6 | 23 March | 7.8% |

### Season 3

The show will be aired in two parts. Only the higher rating of the episode will be shown.
| 2019 | 2019 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 1 | 18 August | 4.4% |
| 2 | 25 August | 2.8% |
| 3 | 1 September | 3.0% |
| 4 | 8 September | 4.6% |
| 5 | 15 September | 4.1% |
| 6 | 22 September | 3.9% |
| 7 | 29 September | 4.5% |
| 8 | 6 October | 4.7% |
| 9 | 13 October | 4.6% |
| 10 | 20 October | 5.5% |
| 2019 | 2019 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 11 | 27 October | 3.9% |
| 12 | 3 November | 4.8% |
| 13 | 10 November | 4.2% |
| 14 | 17 November | 6.6% |
| 15 | 24 November | 5.6% |
| 16 | 1 December | 6.3% |
| 17 | 8 December | 3.5% |
| 18 | 15 December | 3.0% |
| 19 | 22 December | 3.1% |
The show will be aired in two parts. Only the higher rating of the episode will be shown.
| 2020 | 2020 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 20 | 5 January | 4.2% |
| 21 | 12 January | 3.6% |
| 22 | 19 January | 4.1% |
| 23 | 2 February | 3.8% |
| 24 | 9 February | 3.2% |
| 25 | 16 February | 2.8% |
| 26 | 23 February | 3.0% |
| 27 | 1 March | 3.6% |
| 28 | 8 March | 3.6% |
| 29 | 15 March | 2.9% |
| 30 | 22 March | 4.1% |
| 31 | 29 March | 4.1% |
| 32 | 5 April | 6.2% |
| 33 | 12 April | 5.4% |
| 34 | 19 April | 6.9% |
| 35 | 26 April | 5.8% |
| 2020 | 2020 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 36 | 3 May | 5.5% |
| 37 | 10 May | 5.7% |
| 38 | 17 May | 5.7% |
| 39 | 24 May | 5.0% |
| 40 | 31 May | 4.2% |
| 41 | 7 June | 4.6% |
| 42 | 14 June | 4.4% |
| 43 | 21 June | 4.6% |
| 44 | 28 June | 4.5% |
| 45 | 5 July | 5.2% |
| 46 | 12 July | 5.4% |
| 47 | 19 July | 4.9% |
| 48 | 26 July | 4.7% |
| 49 | 2 August | 3.5% |
| 50 | 9 August | 4.6% |
| 51 | 16 August | 4.0% |
| 2020 | 2020 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 52 | 23 August | 5.6% |
| 53 | 30 August | 5.5% |
| 54 | 6 September | 5.3% |
| 55 | 13 September | 6.9% |
| 56 | 20 September | 5.2% |
| 57 | 27 September | 6.0% |
| 58 | 11 October | 4.6% |
| 59 | 18 October | 5.1% |
| 60 | 25 October | 4.6% |
| 61 | 1 November | 5.4% |
| 62 | 8 November | 5.9% |
| 63 | 15 November | 6.0% |
| 64 | 22 November | 6.5% |
| 65 | 29 November | 5.9% |
| 66 | 6 December | 8.6% |
| 67 | 13 December | 7.8% |

### Season 4

The show will be aired in two parts. Only the higher rating of the episode will be shown.
| 2021 | 2021 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 1 | 25 April | 3.7% |
| 2 | 2 May | 3.3% |
| 3 | 9 May | 3.9% |
| 4 | 16 May | 4.0% |
| 5 | 23 May | 3.8% |
| 6 | 30 May | 4.2% |
| 7 | 6 June | 5.1% |
| 8 | 13 June | 3.0% |
| 9 | 20 June | 4.0% |
| 10 | 27 June | 2.9% |
| 11 | 4 July | 3.0% |
| 12 | 11 July | 2.8% |
| 13 | 18 July | 3.3% |
| 14 | 8 August | 2.4% |
| 15 | 15 August | 3.2% |
| 16 | 22 August | 3.1% |
| 2021 | 2021 | AGB Nielsen (Nationwide) |
| Episode | Broadcast Date | AGB Nielsen (Nationwide) |
| 17 | 29 August | 3.3% |
| 18 | 5 September | 4.8% |
| 19 | 12 September | 3.6% |
| 20 | 26 September | 3.1% |
| 21 | 3 October | 3.5% |
| 22 | 10 October | 2.7% |
| 23 | 17 October | 2.7% |
| 24 | 24 October | 2.9% |
| 25 | 31 October | 3.3% |
| 26 | 7 November | 2.6% |
| 27 | 14 November | 3.1% |
| 28 | 21 November | 2.6% |
| 29 | 1 December | 3.1% |
| 30 | 8 December | 2.7% |
| 31 | 15 December | 2.4% |
| 32 | 22 December | 2.1% |

## Awards and nominations

| Year | Award | Category | Recipient | Result |
| 2018 | 18th MBC Entertainment Awards | Grand Prize (Daesang) | Kim Gu-ra | Nominated |
| 2018 | 18th MBC Entertainment Awards | Entertainer of the Year Award | Kim Gu-ra | Won |
| 2018 | 18th MBC Entertainment Awards | Top Excellence Award, Variety Category (Female) | Lee Si-young | Nominated |
| 2018 | 18th MBC Entertainment Awards | Best Entertainer Award (variety) | Yoo Byung-jae | Won |
| 2019 | 19th MBC Entertainment Awards | Program of the Year | Those Who Cross the Line - Returns | Nominated |
| 2019 | 19th MBC Entertainment Awards | Excellence Award, Variety Category (Male) | Yoo Byung-jae | Won |
| 2019 | 19th MBC Entertainment Awards | Excellence Award, Variety Category (Male) | Kim Jong-min | Nominated |
| 2019 | 19th MBC Entertainment Awards | Excellence Award, Variety Category (Female) | Moon Geun-young | Nominated |
| 2019 | 19th MBC Entertainment Awards | Special Award, Variety | Seol Min-seok | Won |
| 2019 | 19th MBC Entertainment Awards | Entertainer of the Year | Jun Hyun-moo | Won |
| 2020 | 20th MBC Entertainment Awards | Program of the Year | Those Who Cross the Line - Returns | Nominated |
| 2020 | 20th MBC Entertainment Awards | Excellence Award, Music/Talk Category (Male) | Kim Jong-min | Won |
| 2020 | 20th MBC Entertainment Awards | Rookie Award, Variety Category (Male) | Kim Kang-hoon | Won |
| 2021 | 21st MBC Entertainment Awards | Entertainer of the Year | Jun Hyun-moo | Won |
| 2021 | 21st MBC Entertainment Awards | Best Entertainer Award | Yoo Byung-jae | Won |
| 2021 | 21st MBC Entertainment Awards | Popularity Award | Kim Jong-min | Won |

## Controversy
### Season 1
#### Jordanian Image Mistake

On 11 June 2018, the production crew of MBC "선을 넘는 녀석들" wrote in the official Instagram that some Jordanian-Israel-Palestine editions broadcast on Friday, 8 June, have pointed out that "the part that used the image of Muhammad as a prophet of Islam and the part that used the rock dome together with the flag of a certain country". The production crew has issued an official apology, in both Korean and English version, for telling people of particular religions and views.

### Season 3
#### Seol Min-seok's plagiarism of his master's thesis

On 30 December 2020, there was a report that Seol Min-seok's thesis on 'A Study on the Ideological Controversy Appearing in Textbooks of Modern and Contemporary Korean History' for which he received his master's degree at the Yonsei University Graduate School of Education in 2010 was 52% plagiarised. Seol admit that in his research in writing the thesis, he neglected citations and footnotes in the process of referencing other papers. Due to the plagiarism allegation, Seol resigned from all the programs he was cast in and MBC decided to end season 3 of the program to reorganise.