 The violent new prisoner Giichi, known as the "Grass Snake", attacks Eiji but Eiji defeats him and his knife-wielding compatriot Ryu by beating them with his cherrywood cane.Instead of punishing Eiji, the head guard sends Giichi and Ryu to Denmacho and is paid by Sabu to send Eiji to Kitamachi court, where his case is reopened with a petition signed by 100 inmates and he is set free.Sabu and Eiji return to Nobuko's house, where the mistress has ended up marrying Toku.