Tsuji is a good man, but he has casual relations with two women in his workplace. He feels bored with his life without excitement. One day he saves the life of a mysterious woman, Ukiyo, who was about to die in a crossing.Ukiyo is beautiful, but her off-guard attitude causes lots of problems for other people including Tsuji. Though he notices her troublesome nature, he unconsciously gets involved with her. Gradually Tsuji comes to have a dangerous relationship with underworld figures. Even he loses usual life style, he is willing to save Ukiyo, but that leads him to an even worse situation.