Steamship Asirpa gets information from a local man that a strange tattooed peddler was seen at the Utashinai coal mines, selling candy, but after investigating him and another stranger, they decide leave by paddle boat for Sapporo. The boat is attacked and captured by a former prisoner, Fusataro Osawa known as Botaro the pirate, who is also searching for the Ainu gold. He and Sugimoto fight to a standstill while Mister Hood's trailing boat carrying the horses becomes separated...