Only One Can Remain Only One Can Remain is the second episode of the fourth season of " LEGO Ninjago : Masters of Spinjitzu . " Plot : Contestants of the Tournament of Elements finally reach Chen ' s Island , < nowiki > < / nowiki > rushing to be the first to see and go into Chen ' s place . The boat sets dock , allowing the people to escape the ship . The Ninja group together , while Kai loses conscious staring at Skylor . Kai immediately blocks the Ninja ' s path , telling them that " “ Ladies first . ” " While walking to their destination , " Garmadon " informs the Ninja that Chen was his former sensei . He then shows them a tattoo he has , which represents a snake . The Heroes of Ninjago reach the underground fortress located in the island . Lloyd questions why his father never told him he had a sensei ; Garmadon answers some things are meant to be a secret . Jay jokes around , saying Chen never taught Garmadon to have a sense of humor . Clouse < nowiki > < / nowiki > arrives , commanding the contestants to welcome Master Chen . The master stands up , recognizing each person ' s element . He explains that only " one " can remain ; by winning the player must collect Jadeblades < nowiki > < / nowiki > in each round . Garmadon stands up , and asks what happens if they lose . Chen laughs , while saying no one would want to lose . Master Chen brings his servants to welcome each contestant to their room . Jay , however , has < nowiki > < / nowiki > mistaken the servants for clowns . Just as the Garmadon plans to follow his son , Clouse interrupts him , banning him from the place . Garmadon makes a compromise with him : he will remain outside , protecting his son since Clouse often uses Dark magic . The Master of Fire enters his room first . His earliest discovery was his " Kai " poster . He wonders into his patio curiously , and glances at Skylor , his next door neighbor . Kai < nowiki > < / nowiki > attempts to use his Elemental power to win Skylor over , but he quickly realizes his hand was on fire . The Red Ninja screams in pain , then cools < nowiki > < / nowiki > the Fire down . The Master of Fire asks what element his love interest has , but she refuses to answer . Jay ' s servant welcomes Jay to his current home . She also informs the Master of Lightning the ability to control anything in his room with his electrical power . The Blue Ninja attempts to try , popping out a TV . Cole complains his bed is made out of solid rocks , accidentally triggering a button at the same time . Wondering what the button does , a shelf opens up , revealing a bunch of food . Following his instincts , Cole automatically runs to the food Chen provided him . Lloyd checks his new " Tournament gi " , but is quickly interrupted when Master Chen announces the competition starts now . Lloyd runs to a Jadeblade close to his room , but other attendants of the tournament also compete for it . While getting close , Lloyd is rushed < nowiki > by Ash , narrowly outsmarting and defeating him . Clouse sees Lloyd , and then uses and attacks him , therefore interrupting his spell . Jay , on the other hand , is taking a shower , when Bolobo < nowiki > < / nowiki > enters his room , trying to find a Jadeblade . The Blue Ninja soon puts on a towel and knocks him to the floor , only to find a jadeblade in a light . Bolobo takes it , prompting Jay to turn on " Starfarer " which amuses the Master of Nature . < nowiki > < / nowiki > Jay then whacks him with his towel , while commenting his room . Cole , on < nowiki > < / nowiki > a full stomach , is searching for a Jadeblade and comes close to obtaining it , only to lose it to Griffin Turner who grabs it from him . Later , while more contestants goes after the same Jadeblade as the Earth Ninja , they eventually bury him ; but he soon overthrows them . Invizable < nowiki > < / nowiki > quickly get on his feet ( as one of the people who tackled Cole for the same Jadeblade ) and snatches it . Cole makes a mini earthquake which covers Invizable in dust , giving Cole the chance to knock him out . He grabs the blade and raises it in triumph , but Gravis < nowiki > < / nowiki > takes it . Ironically , another blade was on the floor , allowing Cole to take it silently . Kai and Skylor see a Jadeblade on top of their roof . Skylor preforms back flips to get to the location of the blade . Kai jumps up too , and accidentally knocks her down . He managed to grab her leg , stopping her from falling . He flings her up ; however , she reaches the blade , now making only one Jadeblade left and Karlof heads to the last one . Kai realizes and follows Karlof . Kai ' s archenemy won the battle , but before Karlof could hand it in , Kai unscrewed his Metal fist , getting a chance to win . Kai flies to Chen ' s location putting the blade in its spot to win . Since Karlof has lost the contest , he is sent to Chen ' s secret location in the dungeon . Kai suggest they have a meeting later in his room . The Ninja had entered Kai ' s room with the exception of Jay since Skylor has arrived , therefore making the Red Ninja push Jay . After Skylor had re - entered her room , Kai helps Jay get up , apologizing for the mishap . The Ninja discuss the tournament while Cole lays down on Kai ' s bed , accidentally triggering a button again which reveals a secret entrance . Cole informs his friends , and they silently travel to the secret room . In the secret cave , Kai , Jay , Lloyd , and Cole hear Skylor shout in her room . They observe her room with little peeking holes , and surprisingly find her using the Fire element which makes Cole tease the Red Ninja singing that Kai ' s heart is on fire " . " Soon , the Ninja face Chen ' s minions , but silently hide behind a rock while defeating the four minions . After they defeat the minions , they take their outfits to blend < nowiki > < / nowiki > in and look like an Anacondrai Cultist , and go to Master Chen . Master Chen blurts out that they have captured Karlof , and steals his power with his Staff . However , he uses Ice to capture the Metal element , which the Ninja find interesting since Zane < nowiki > < / nowiki > has Ice powers . Their discussion quickly goes to a stop , when their tattoos ( which are made out of chocolate ) melts which gives away their disguise . Lloyd commands the Ninja to run out of the place ; Cole trips on a booby trap which sets out traps and a huge snake . Running away from < nowiki > < / nowiki > Clouse ' s snake , they finally make it back into Kai ' s room . They now promise to stay within the rules until they find Zane . Clouse strokes his Snake , explaining he knows the Ninja had spied on them .