Mourning the death of her boyfriend, Yukiko wanders aimlessly from one city to another. During her mourning, she becomes addicted to gambling. One day, a man that resembles her deceased lover asks for help. He's being pursued by a dangerous gang of yakuza.
Yukiko is on her way to meet Boss Gunji. Judging by her appearance, no one would suspect that this beautiful young woman, sitting quietly in a suburban train, is the only woman able to beat the best professional players in Japan; or that she is wearing the tattoo of the man that loved her and died for her...
Arikawa runs a transport company. But this is only a front for his gambling house. Yuriko is a regular on the scene, and she is fascinated by the dice and the one who throws them. A year before, Yuriko's father died in mysterious circumstances; she decides to go in search of the truth.