Yuzuka, a first-year nursery school teacher, is sexually harassed by the principal on a daily basis. The principal, who has his eye on her voluptuous body and big ass that seems to be spilling out of her panties, takes advantage of her weak personality and his position and gradually escalates the sexual harassment. Although Yuzuka resists at first, her true masochistic nature gradually becomes apparent, and she becomes addicted to pleasure and even accepts creampies.