Momo is a new teacher who has been appointed to this position due to the sudden retirement of her former teacher. She is motivated to overcome the bad rumors in her class with her natural cheerfulness and enthusiasm. One day, Momo suspects that one of her students, Kashiwagi, is being bullied by a group of delinquents led by Yoshino, the son of the school president. However, Yoshino soon finds out and becomes furious with her.