Dr. Stone Wiki
Dr. Stone Wiki

Prison Break is the thirtieth episode of the Dr. Stone anime, and the sixth episode of the second season.


Desperate to escape his prisone confine, Chrome tries to stratergize a plan that will allow him to escape. However, surrounding his prison are traps and his new head jailer Yo is a former loose cannon police officer.

Plot Details

Chrome contemplates.png

Before they charge into the Tsukasa Empire, Senku reviews over the plan, which is in fact really short. In preparation of an ambush made by Senku with a tank, Tsukasa enlists the help of Yo to deal with the situation. Yo before the petrification was a police officer with a natural talent with using a police baton. Chrome in the meanwhile, contemplates a strategy on how he can escape from his imprisonment, but fails to think of anything. It's then that Chrome sees his new jailer Yo disciplining a Tsukasa Empire goon, and after he's finished, he reveals his story as a failed police officer. Yo was fired from his job because of his reckless and loose cannon attitude. Furthermore, Yo plans on becoming a 4th head honcho of the empire and he hopes to use his newly assigned task garnish favor with his superiors. Another thing to note is his crush for the beautiful Minami, who he hopes will be impressed by his accomplishment allowing him to court her. One of the goons then points out that Chrome listened to everything Yo stated, but he thinks nothing of him. Frustrated by his predicament, Chrome re-vows to break out of his imprisonment.

Chrome Fails to start a fire.png

During a bathroom break, Chrome collects a bunch of items for him to try and use to help with his escape. Nearly all of the items are worthless except for a bunch of sticks, which he tries using to start a fire without success. Later that night, Chrome gets a battery from whom he suspects was Taiju and Yuzuriha. Rigging the battery to his cage, Chrome unintentionally alarms the guards and is knocked backward by Yo. Chrome was terrified that Yo and the guards were going to figure out that he was in possession of a battery. Yo and the guards instead misinterpret Chrome using twigs and sticks to try and start a fire as an attempt to escape his cage. Afterward, while contemplating an alternate strategy to escape, Chrome realizes he could use sodium hydroxide, to melt the ropes of the cage. He remembers that it can be made by electrolyzing salt water, but not having any at his disposal, he starts working out intensely, drinking a lot of water and collecting the sweat. He runs electricity through it, and gets a strong alkaline solution. As his guard sleeps, Chrome pours the concoction onto the cage ropes, causing them to loosen and break.

Yo gets it to him by Chrome.png

Chrome then makes his escape out of the prison and using a single bamboo stick, catapults himself to avoid any of the pit fall traps. He then manages to circumnavigate around all of the other hidden pit falls traps too. Eventually, a panic-stricken Yo learns about Chrome's escape and pursues him to a cliff by a waterfall. Having the upperhand against Chrome, Yo gives him two choices, return to his cell dead or alive. Left with no other choice, Chrome answers that it doesn't matter as he's going to die soon anyway and then vomits a bunch of blood. In his own words, Chrome confesses that he has pneumonia, a disease as good as a death sentence; and he sprays his blood onto Yo. Taking advantage of Yo's flustered state, he makes use once again of his grand bout training by taking a shot directly into yo's crotch with the bamboo pole. Yo now incapacitated, Chrome makes his escape back to the camp where he reunites with the people of Ishigami Village. It's also revealed there that the blood Chrome vomited was fake blood.



Inventions and Discoveries

  • Sodium Hypochlorite
  • Oxalic acid

Anime to Manga Differences

  • An extra scene was added about why Yo was revived where Minami says she'd interviewed him previously after his win for the baton category of the police martial arts competition.
  • The explanation of Yo's past was extended to him catching tax evaders, getting shot at while trying to apprehend them, and then getting disciplined and fired by his superiors for shooting the perpetrators.
  • Yo has also been given a minor crush on Minami, presumably for her looks.
  • The silhouette of the person rolling the battery to Chrome was shown.
  • The narration from the end of chapter 71 was turned into an extra scene where they discuss the science Chrome did to escape.


Site Navigation

[v  e]
Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
New Stone World Arc
Chapters 194195196197198199200
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Stone to Space Saga