Sabu and Ichi learn that a thief plans to break into the Omiya storehouse so they lie in wait. The thief uses poison darts from a blow pipe and almost kills Sabu who is saved by Ichi. After a long chase, Sabu eventually catches the great thief Rokurota, which enhances Sabu's reputation> However, even threatened with the death penalty, Rokurota refuses to name his accomplices. A woman, Aki, visits Rokurota at the Kitamachi Magistrate's Office, and Sabu follows her to a temple...