Dr. Stone Wiki
Dr. Stone Wiki

Prison Break (PRISON (プリズン) BREAK (ブレイク) Purizun Bureiku) is the seventy-first chapter of the Dr. Stone manga.


Stuck in jail, Chrome wonders how he can escape. Outside the cell, Yo bullies his subordinates, punishing them for small infractions like accidentally activating a trap. He doesn't believe Chrome is anything to worry about, calling him a "primitive punk". This just makes Chrome even more determined to escape and show him what-for.

Pretending to need to use the bathroom, Chrome grabs random plants from outside and stuffs them into his pants. He gets dry shepherd's purse, wood sorrel, dandelions, dry shiso, and dry sticks. He also collected a four leaf clover, reminding him of the past with Ruri. He tries making a fire by rubbing sticks together to burn the ropes, but fails.

That night, Chrome wakes up to his confiscated battery in front of his face, and rapidly hides it in his pants as well. He assumes Taiju and Yuzuriha were responsible, and thanks them in his mind. He begins to light a fire, but it immediately alerts all the guards and he's slammed backwards by Yo's tonfa. Chrome is worried Yo will notice the battery, but Yo only sees the sticks and assumes the fire was made by that. He teases Chrome once more, laughing at him for his primitiveness. Chrome leans in to it, telling them that by boiling sea water you get salt. This makes them laugh even more, and they leave him alone.

Chrome's next plan is to make sodium hydroxide to weaken the ropes. Collecting his sweat and doing electrolysis, Chrome makes sodium hypochlorite. This breaks down the ropes anyways, allowing Chrome to escape.

Characters in Order of Appearance[]

Chapter Notes[]

  • The jail boss is Yo Uei, a former police officer before the petrification.
  • Chrome collects dried plants from outside.
  • Chrome makes sodium hypochlorite.
  • Chrome breaks open his cell wall.


  • Both Chrome and the sodium hypochlorite broke down cell walls this chapter.

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