New employee Adachi is going on a business trip with her boss Saeyama, whom she dislikes for his tendency to sexually harass her. Adachi, who has been dating her senior colleague Yoshida at work, confides her dissatisfaction but is appeased and reluctantly goes on the business trip. While joining Saeyama for a drink on the business trip, Adachi is given a sleeping pill and wakes up to find Saeyama devouring her body... She resists at first, but the moment he inserts his penis, a wave of pleasure runs through her entire body. Their physical compatibility is excellent and she keeps cumming all night long.