The two ronin that Sawatari Mondonosuke (Kitaoji Kinya) saved were secret envoys from Ryukyu. They could not stand the tyranny of the Satsuma clan and were trying to appeal to the shogunate. But they were captured by someone afterwards. Mondonosuke's boredom bug started to stir... Mondonosuke rescued the two who were imprisoned in the mansion of the chief elder, Okubo Iga-no-kami (Nakamaru Tadao), as well as a senior official, Mamoru (Ishiyama Teruo), and his niece, Reika (Takagi Saya), who had also escaped from Ryukyu. The Satsuma clan hired Wakura Juro (Nakatani Ichiro) to assassinate Mondonosuke through his daughter O-Ran (Yamamoto Midori),who is a spy .