There's a caretaker at a run-down apartment building, and the desire to have sex with him is intense! This caretaker is kind yet strangely seductive, causing three residents to start fighting over him. Tamura calls the caretaker over, claiming she needs advice about replacing floorboards. As he crawls across the floor inspecting it, the erotic sight of her flashing her bra and panties becomes the highlight. Sato invites the caretaker to teach her how to remove stains from her bed—but the stain turns out to be semen! The caretaker himself gets turned on, wetting his panties and even leaking vaginal fluids that create new stains. Sasaki, the longest-standing resident, invites the caretaker for drinks in the evening. Having succeeded in jerking him off to ejaculation a few days prior, he now threatens to leave unless they continue where they left off. How will this battle for possession ultimately end!?