JNS01

The Arceus Chronicles (Part 1) (Japanese: サトシとゴウ！シンオウフェスにゴー！！ and ! Let's Go to the !!) is the first episode of Pokémon: The Arceus Chronicles and the first special episode of Pokémon Journeys: The Series. It was first released in Japan on January 21, 2022 alongside JNS02 on Amazon Prime Video, and in the United States on September 23, 2022, combined with JNS02, JNS03, and JNS04 into a movie on Netflix.
==Plot==
The episode begins with a display of the Pokémon world and the numerous that inhabit its skies, seas, and lands. Above them all resides , the Mythical Pokémon that created all there is in this world, now watching over both the Pokémon and humans that inhabit its creation.
 and Goh have arrived in Canalave City to research Sinnoh's past at the Sinnoh Festival. While walking through a reconstruction of an ancient town street, they're greeted by , whose presence comes off as a pleasant surprise for Ash and Goh. They notice the clothes Dawn is wearing, and she takes them to rent themselves their own outfits. She leads them to a tent, where they find , who is contributing to the Sinnoh Festival a lot with her knowledge of the region's history. Cynthia rents Ash and Goh their own ancient-style outfits and leads them to the museum exhibit.
Meanwhile, Team Galactic Saturn and a group of s have cornered a in a volcanic cave. While Heatran easily defeats the Grunts' with , Saturn's Toxicroak's deals heavy damage on the type and defeats it. Saturn takes the opportunity and flings a Dusk Ball at the Legendary Pokémon, it. He reports the successful capture mission to the Team Galactic HQ, where Mars and Jupiter are busy observing the Plate they have acquired.
Back in Canalave City, Cynthia shows Ash and the museum exhibit about ancient Sinnoh and the Pokémon that inhabited it, such as , , and the regional forms of and . Ash asks how Pokémon were caught back in the day, and Cynthia presents each of them with a wooden , recreated using ancient schematics. She then leads them to the "Pokémon Catching Experience Corner", a dome teeming with Pokémon, not dissimilar to Cerise Park. Cynthia calls three Pokémon in particular, , , and , to come before them. Goh is puzzled, since all three are Pokémon from regions outside Sinnoh, but Cynthia explains that historical records show these Pokémon being brought to Sinnoh during ancient times, and she's studying them to see how they could've affected Sinnoh's ecosystem.
Cynthia declares a contest: if the group can catch the first partner Pokémon within three minutes with the assistance of their own Pokémon, she'll give each of them a prize. The first partner Pokémon hide, and the group sets out to find and catch them. Dawn is the first to find one, with accidentally running into Oshawott while clearing away tall grass with . Oshawott deflects Dawn's initial Poké Ball throw, causing the ball to hit Rowlet and reveal its location to Ash. Goh, meanwhile, manages to locate Cyndaquil, although it ends up tackling him and then using on his face. With some help from their partner Pokémon, Ash and his friends manage to catch the three first partner Pokémon. They're surprised at the ancient Poké Balls letting out a puff of steam when the capture is successful, but celebrate their success regardless before letting the first partner Pokémon back out and thanking them for the experience. Since they succeeded in catching the three Pokémon within three minutes, Cynthia gives each of them a copy of her book about the history of Sinnoh's space-time, although only Goh is truly excited to receive it.
Meanwhile, Saturn returns to the Team Galactic HQ with Heatran. Now that Team Galactic has both it and the Arceus-infused Flame Plate in their possession, they're ready to begin their experiment. While the Plate is being hypervibrated, Saturn calls out Heatran and has it use on the artifact, creating massive amounts of energy. As the energy level reaches critical point, an energy pulse is released from the Plate, which is sensed by Pokémon across Sinnoh. In Canalave City, Ash, Dawn, and Goh's partners feel the pulse as well and alert their s that something is wrong in the direction of Mount Coronet, so they decide to investigate. In its own dimension, Arceus is also affected the disturbance, calling forth and dispatching the to seek help.
With the first phase of their experiment successfully completed, Team Galactic has verified that the energy that was just released affects the fabric of space-time. Now they are ready to use that energy to open a gate that will bring back their leader, Cyrus.
==Major events==
* and Goh travel to Sinnoh again and reunite with and .
* Team Galactic returns, planning to bring back Cyrus.
* Saturn catches a .
* Ash, Dawn, and Goh learn about Sinnoh's past.
* Ash, Dawn, and Goh temporarily catch a , an , and a , respectively.
===Debuts===
====Pokémon debuts====
* (Hisuian Form)
* (Hisuian Form)
* 
* (male)
==Characters==
===Humans===
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* Goh
* 
* Saturn
* Mars
* Jupiter
* s
* Magikarp salesman
* Trainers
===Pokémon===
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* ()
* (; new; released)
* ('s; new; released)
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* (; new; released)
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* (Saturn's; new)
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* (s'; ×3)
* (s'; ×3)
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* ()
* ()
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* (multiple)
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* (multiple)
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* (Hisuian Form; debut; fantasy)
* (Hisuian Form; debut; fantasy)
* (fantasy)
* (male; fantasy)
==Trivia==
* This special was released between JN093 and JN094 in Japan.
* This episode marks the first appearance of a number of Pokémon species in the after long absences:
** and , both of whom last appeared in Zoroark: Master of Illusions.
*** This also marks the first time a Bastiodon other than Byron's has appeared in the animated series.
** , who last appeared in The Dream Continues!
** , who last appeared in A Shockingly Cheeky Friendship!
** , who last appeared in Heated Battle.
** , who last appeared in A Relay in the Sky!
** , who last appeared in Master Class Choices!
** and , both of whom last appeared in Volcanion and the Mechanical Marvel.
** , who last appeared in Till We Compete Again!
* This episode marks the first appearance of the Magikarp salesman in since The Fires of a Red-Hot Reunion!, which aired almost 10 years prior.
* This episode marks the first physical appearance of Team Galactic in the series since The Battle Finale of Legend!.
** This also marks the first time a villainous team other than Team Rocket has appeared outside of its debut series.
* Including temporary catches, this is the first time has caught a Pokémon species that he , excluding , all in which were caught in a single episode.
** This episode also marks the only time Ash has caught a first partner Pokémon outside of its native region and debut generation.
** This episode also marks the last time Ash is seen catching a Pokémon in Pokémon the Series.
* butting heads with is a possible reference to the rivalry he had with Ash's Oshawott during .
===Errors===
===Dub edits===
* The Japanese texts depicting the names of Canalave City and the Team Galactic s are edited out.
==In other languages==
Category:Pokémon: The Arceus Chronicles
S01
Category:Episodes written by Atsuhiro Tomioka
Category:Episodes storyboarded and directed by Yūji Asada
Category:Episodes storyboarded by Yūji Asada
Category:Episodes directed by Yūji Asada
Category:Episodes animated by Masaaki Iwane
Category:Episodes animated by Izumi Shimura
Category:Episodes by multiple animation directors
Category:Episodes in which a main character obtains a new Pokémon
Category:Episodes in which a main character releases or gives away a Pokémon
Category:Episodes in which a main character joins the group
Category:Episodes focusing on Team Galactic
Category:Episodes in which a Champion appears
Category:Episodes in which a Legendary Pokémon appears
Category:Episodes in which a Mythical Pokémon appears
de:Satoshi to Go! Sinnoh Fes ni Go!!
es:LPA01
fr:Épisode spécial LV 1
it:CA01
zh:宝可梦 旅途 特别篇 第1集