Kawano Ayu (Ueto Aya) takes Kawano Tetsu's (Oizumi Yo) son, Yuki (Shibuya Takeru) to preschool by bike. There, she meets Hojo Midori (Tomosaka Rie), Hanawa Noriko (Katase Nana), Kominami Yae (Yamaguchi Sayaka) and various other peculiar school moms -- but they turn a cold shoulder.