Monami Takarada lives with her female coworker in a company dormitory located in a quiet residential neighborhood with a good reputation for safety—until rumors begin to spread about a suspicious man lurking around. One night, after double-checking the doors were locked, Monami falls into a deep sleep. Suddenly, an intruder sneaks into her room, stands over her sleeping form, and forcefully kisses her full lips before groping her large, swollen breasts through her nightwear. Shocked, Monami opens her eyes and sees Asahi Mizuno standing before her, wearing an eerie, seductive smile. On this unsettling night, Monami's ordinary life takes a dramatic turn.