Formerly a secret agent of the shogunate, Sanzo and Yumenogosuke are now on the run, with their lives in danger, and make their way to Kurume Castle in Kyushu. Sanzo extorts an official patrolman but is caught and thrown in jail. Meanwhile, Gosuke meets Tanokura Tanosuke and Otoyo, a street performer couple traveling with their son, Daikichi. However, they are attacked by a group of samurai. Saved by a female swordsman dressed as a man, the Tanokura family heads for Hiyoshi.