Ryutaro Otomo as the Edo magistrate Umon Kondo is out to solve a crime that centers around the murder of a jail guard & the escape of a criminal who is later himself killed. His dying words in Umon's arms were, "I didn't kill the guard." The murdered criminal had been a safe-cracker & only his girlfriend knows where he hid a fortune. She is kidnapped, so the plot gets thicker & thicker.