When Shion's father went bankrupt and disappeared, leaving her homeless, she and her mother rented the second floor of the house of the landlord Ginzo. Ginzo is a wealthy man who owns several apartments and is the caretaker of the local area. This old man, who appears to be a good person, actually has a secret identity as the organizer of the Sailor Suit Mania Club, and has a perverted desire for girls in uniforms... "A plump young body is my favorite thing." A pure sailor suit is defiled by a perverted maniac. The innocent and beautiful Shion is repeatedly molested and raped by older men while still wearing her uniform.