Taro Sakamoto, a former legendary hitman, has retired and started a new life with his family in the suburbs of Tokyo. He now runs a convenience store with his wife and daughter. The story takes a turn when a new neighbor moves in, and Sakamoto's life is disrupted. As he helps the newcomer settle in, his past and present collide, threatening to upend his quiet existence. A heartwarming and action-packed tale of redemption, family, and finding one's true purpose.