Jūgo, Uno and Nico fall through a trapdoor on top of Liang and Upa in the basement of building 5. It is guarded by a surveillance doll roaming the corridors with a deadly scythe. The dolls were brought in to monitor the underground cells. Supervisors Hajime Sugoroku and Samon Gokuu are also captives. While the prisoners discuss the probable escape of Enki Gokuu and the loss of Nico's medicine bag, Enki joins up with Inori, Ruka Gojou, Houzuki Sanzou, a former boss of an assassin organization, Inmate 8 and Qi who finds Nico's bag...