Masaru and Yukiko have been married 44 years. They have three children who live independently from them. Masaru and Yukiko enjoy their peaceful days, but, one day, Yukiko tells her daughter Naoko that she wants to divorce Masaru.
When Yasuko (Eriko Hatsune) was a child, her mother left their home. She grew up not knowing what an ordinary family is. Satoshi's (Kengo Kora) mother was the girlfriend of Yasuko's late father. One day, Satoshi appears in front of Yasuko. Since that moment, Yasuko's monotonous life begins to change.
Rei, the deadly but reluctant assassin for the Zero Division of the Tokyo Police Department, befriends a young man after she sees him cruising a gay bar looking for johns. After he gets beaten up by a group of street thugs, she takes him in to live with her. When a series of vicious murders takes place, she begins to suspect that the killer may actually be her friend taking revenge on everyone who has abused him. Will she uphold her duty to the police, or protect her only friend?
An opportune salaryman moves his family into a model mansion for 12 months; unfortunately, they must allow prospective buyers to trek through their home during business hours.