Tachibana Mizuki, who lives in room 302, charms everyone around her with her thick, bouncy peach-like backside and overwhelming pheromones. When a liquor delivery man comes to her apartment, he is instantly captivated by Mizuki's jiggling, plump ass, completely losing himself to her allure. Obsessed by her figure, the delivery man is consumed by uncontrollable lewd fantasies. Meanwhile, a young man living in the same apartment building is also stirred by Mizuki's sensual charm and finds himself deeply affected by her presence.