The fight between Liang and Upa against Hachiman continues. Nico shows up out of nowhere and greets Upa, moved by his last line in the previous episode. Qi recalls events from his past when he joined up with Hachiman. Nico intervenes in the fight to save Upa, meanwhile, Uno freaks out about how they all lost sight of Nico. During the fight against Hachiman, Nico's medicine starts to wear off, and an alternate persona appears to take over.

Enki realises the prisoners have escaped as Mitsuru and Kenshirou begin questioning the situation. Meanwhile, Trois and Honey free Kiji who takes care of Daisen Kokoriki and Daisen Youriki before defeating Ruka. Jyugo finally finds Hajime before freeing him and Samon from their cells. Kiji handcuffs the inmates, but they are suddenly confronted by a hoard of surveillance dolls as are Jyugo and Hajime.

Jyugo makes a routinely escape attempt and is caught by Hajime while he's napping in the Guard's room with Kuu. All the inmates and guards seem to be going through a typical and ordinary day, much to the chagrin of Mitsuru Hitokoe, who wants something exciting to happen during Part 2 of the anime.

Jyugo, Uno, and Nico wind up in an underground cell that happens to be holding Upa and Liang. The two inmates from Building 5 inform the trio that Building 5 has been compromised by the former Nanba supervisor, now inmate, Enki Gokuu. The five inmates escape their cell, thanks to Jyugo, and head off to find Hajime and Samon Gokuu. Along the way they find Honey and Trois locked in a cell.

As Ruka begins to fight seriously, Trois and Honey pursuade Uno and Jyugo to go ahead while they continue fighting but Jyugo eventually returns and defeats Ruka with his blades. Kokoriki and Youriki later arrive and try to arrest the escaped inmates. As they escape, Uno, Honey and Trois come up with a plan while Jyugo begins to make his way to Hajime.

The team of inmates retreat into an abandoned office where Jyugo discovers confidential inmate files about himself. As they advance, they Liang and Upa send them ahead and stay behind to fight a possessed Rokuriki before being confronted by their former boss, Hachiman.

Jyugo is saved by Tsukumo from an out-of-control Rock. Meanwhile, Hajime deals with Yamato, who's in the same state as Rock. After finding a talisman on the two of them, Hajime and the others recognize the talismans belonging to Building 5. Hajime decides to go investigate the matter, and with much convincing on Uno's part, takes Cell 13 (except Rock) with him. He leaves Building 13 surveillance to Mitsuru Hitokoe. Mitsuru tells Hajime that they contacted Building 5, but nobody has been responding.

While Hajime is on his three day suspension, Kenshirou Yozakura, Kiji Mitsuba, and Samon Gokuu take turns each day to supervise Building 13. Jyugo finally returns to Cell 13 and apologizes to them for all he's hidden from them.

Sometime before the second round of the New Year's Tournament, Tsukumo is visited by Hanzou Hattori. During the visit, Tsukumo's past is revealed.

Upa wonders if someone other than Enki is involved in the situation. Meanwhile, Jyugo and his group reach level 2 where they are confronted with numerous Jiang-Shi dolls. As Trois explores the area, they encounter Ruka Gojou and other guards with talisman on their foreheads, Daisen Kokoriki and Daisen Youriki. Trois tries to defeat him with a handmade a flame-thrower he made with leftover parts. Just as they think they are free, Ruka Gojou appears and captures Jyugo.

Hajime Sugoroku discusses the backstories of the four inmates of Cell 13 with the Warden.

Uno continues his match against Honey and Trois and ultimately wins. Hajime Sugoroku and Nico face against Samon Gokuu, Qi and Upa in the following Spinning-top round.

Seitarou Tanabata has difficulty dealing with Cell 13 due to their persistent bullying and appeals to Hajime Sugoroku for help. Tsukumo, a repeat offender and escapee, is transferred to cell thirteen but moved to cell eleven after conspiring to break out with Jyugo. Meanwhile, Nanba Prison prepares for New Year's.

The final match of the New Year's Tournament begins; Kenshirou Yozakura & Musashi vs. Hajime Sugoroku & Jyugo. Hajime seems to be doing fine with his match, but Jyugo ends up in a bit of trouble against his opponent, whom he seems to have some history with.

Musashi discusses more of his past prior to meeting the Scarred Guard with Kenshirou Yozakura. Uno gets everyone from the New Year's Tournament together to play in the game room he got for Cell 13's victory in the tournament. Later, Jyugo leaves Cell 13 for some fresh air at night, only to encounter Elf.

The battle between Jyugo and Musashi continues on as Jyugo goes berserk and let's loose his power after hearing Musashi mention the man that placed the shackles on him. The Warden orders the guards, Hajime Sugoroku, Kenshirou Yozakura, Samon Gokuu, and Kiji Mitsuba, to contain the two inmates.