Akira, who has been weak since childhood, he loves playing the violin. Toru Saijo, the private physician who has been helped Akira since he was little. Akira has a special feeling for Saijo. He used to think he can be with Saijo forever. However, one day Saijo told him that he is goung to engage…

Three tales about enigmatic strangers entering into the lives of trusting citizens play out in three different Japanese cities, hinting at a connection to a grisly home invasion homicide in the Tokyo metro area.