Minako's daughter, Rena, is pregnant, and her son-in-law (Akio) was a rugby player in school and is tall, polite, always cheerful, has a big smile, and is perfect. Rena returns to her mother's house to give birth there. She throws away old clothes with her mother's help until she finds a sexy cheerleader uniform. She decides to try it on. There, Akio, mistaking Minako for his girlfriend Rena, hugs her from behind and asks for sex.