Hiroshi Kakurai is an assassin who was thinking of retiring. He travels to an island in the Seto Inland Sea and begins to live peacefully with Shinobu, a woman he has fallen in love with, but the intensity of his love for her begins to drive him towards destruction...

大都会の片隅に生きる孤独な男、加倉井浩。子供を愛し、小鳥を愛する心優しい男だが、彼の仕事は冷徹な殺し屋。かつて足利遠枝という女からこの世界に誘い込まれた彼は、そろそろ足を洗ってひっそり暮らすことを考えていた。