Murooka is an elementary school teacher with a secret desire for little boys. To hide his unorthodox attraction, he wears a "mask" while at work. However, when a substitute teacher with the body of a school boy begins working at the same school, Murooka's urge for love may finally be fulfilled. Along the way, he must also navigate the affections of a beautiful female teacher and his first crush, the uncle of his favorite student, who volunteers to help with the school play. Amid this chaotic situation, will Murooka ever find peace or will hilarity and madness continue to ensue?
