Momoka Onigawara wants to have a fulfilling high school life without anyone finding out her embarrassing secret – her family are oni, with their horns popping out when they get flustered. She reunites with her former childhood friend Ren, who wants to make a movie to one-up his famous director father. After they find out that the script he seeks was originally written by Ren's father, Momoka's father, and Momoka's dead mother when they were high schoolers, they decide to live out their youth by making the movie.