During a business trip with her intriguing boss, OL Tsukino decides to pretend to make a mistake and stay in the same room. However, even though she pretends to be drunk and sleeps defenselessly while expecting something to happen, her reserved boss doesn't make a move. Frustrated, Tsukino resorts to the ultimate measure of stimulating her sleeping boss at night and forcing him to ejaculate. Completely in a nymphomaniac mode, Tsukino is not satisfied with just one ejaculation and squeezes out all the sperm accumulated in his testicles using various methods! Yes, the long night has just begun...