A well-located rental apartment just 7 minutes on foot from the station, built 7 years ago, close to downtown with excellent living conditions, fully furnished with appliances. The male manager in charge of this popular property possesses a closely guarded master key, and his twisted desires begin to stir. A 22-year-old woman dressed as an office lady returns home and immediately starts practicing her performance for the year-end party, changing into a Santa costume and rehearsing dance moves while watching videos of a national idol. Sweating from practice, the OL unknowingly drinks a beverage laced with drugs, succumbs to sudden drowsiness, and quickly loses consciousness. The man then enters the room and reaches out toward the woman's helpless body.