Yuko Asakura (Maki Tomoda) is 42 years old. Recently, she has been talking about exams with her mom friends. Among them, only Mikiko Segawa (Asahi Mizuno) had a relaxed expression on her face. Yuko, who had a rivalry with her Mikiko, could not hide her impatience, but at that time, she was introduced to her educational consultant by her acquaintance, Kaoruko. Yuko gets her spirits up and heads for the place she was told. However, what she was waiting for there was a very obscene reality that her mothers who wanted to enter her back door will serve her with her body and compete for points.
