Ichikawa Hajime (a.k.a. Ping), a fisherman, is a single-minded man of the sea. He was only interested in fish and women, but at the request of a classmate, he agreed to support the city council election. Rokuda, on the other hand, has fled to this fishing town from an assassin to cover his mouth in a corruption case. Their encounter sets off a bomb in the world of politics and the yakuza.

A series of mysterious deaths of middle-aged men occurs. The culprit is Sho. Her method of killing is brutal: she disguises herself, lures the lustful men, and kills them in the middle of sex. A detective becomes suspicious of the relationship between Sho and her father, and as he investigates, he discovers that the reason Sho has become a killing machine lies in her past...