Prisoner Upa is scheduled to fight guard Samon Gokuu, but Rock teases him into a match first. Samon easily beats Rock and the other prisoners are impressed. Guard Inori Hakkai takes over prisoner supervision from Samon with his new assistant Houzuki Sanzou. The warden is summoned to police headquarters with requested information on inmates 15 and 634 (Jyugo and Musashi), leaving the supervisors in charge...