A girl kills herself leaving behind the boy who loved her. 10 years later he still isn't over it. Until he meets a high school girl who looks just like his late love but this girl has a dark secret side.

Tsukio is a police officer who is so frigid calm and excellent that he is called a robot. One day, however, he is summoned by his boss and told to quit the police force. This is the beginning of a grand project...