Seven years old and located a seven-minute walk from the station, this popular rental apartment complex offers convenient city access and well-equipped living spaces with furniture and appliances. A male employee working for the management company gains access to the strictly guarded master key and gives in to his twisted desire to invade the women's rooms. A 25-year-old woman, appearing to be a prim office lady, returns home and tidies up her room as usual, starting to iron her clothes. After finishing a phone call with her mother, she sighs deeply and drinks a beverage laced with drugs, losing consciousness. As her awareness fades, an intruder suddenly appears in the room and begins to molest her body. Gradually, her arousal fluid seeps out, soaking her underwear, and her sensitive womanhood easily accepts the man's erect penis.