After Police Captain Dan McLaren becomes police commissioner, former detective Johnny Blake publicly punches him, convincing rackets boss Al Kruger that Blake is sincere in his effort to join the mob. "Bugs" Fenner, meanwhile, is certain that Blake is a police agent.

The film stars two of Itami's regular actors, Nobuko Miyamoto as a geisha who brings luck to the men with whom she sleeps, and Masahiko Tsugawa as her unfaithful, sometimes partner. As well as showing her relationships with the man she loves and the men who employ her, it satirizes corruption and the influence of money in Japanese politics.