In order to earn “cast points” that he can use to buy antidote for the poison injected by his collar, Ganta goes head to head with one of the prison’s toughest inmates in a deadly obstacle course.

Unable to afford antidote, Ganta faces his impending death - until You comes to his rescue. Later, after learning that the Red Man might be an inmate, Ganta, Shiro, and You venture into the secluded G Block to find the truth.