An undercover narcotics officer is killed, and after his funeral some yakuza break into his apartment and rape his wife, Nami, while looking for the drugs they claim he stole from them. Afterwards Nami attempts to commit suicide, but after being rescued by a mysterious yakuza she decides to infiltrate the gang and get revenge.

The world is in turmoil with the October Revolution of 1917, riots over the inflationary price of rice, and the military expedition to Siberia in 1918. But Shinsuke, a brothel owner, spends his days in the arms of geishas, paying little heed to the events happening around him.