Kumazawa Jiro, a tax-worker, is tricked out of a large sum of money by the swindler Himuro Makoto. With the help of his best friend, a detective, Kumazawa tracks down Himuro and teams up with him and sets out to extract JP¥ 1B in unpaid tax from a large corporation that is hiding tax evasion.

A young man is unable to save a young woman from being assaulted, despite her having helped him out of a difficult situation in the past. Wracked with regret, he decides to provide assistance to her younger twin sister who is plotting revenge against society.