Jun Kousui is a quiet, slightly absent-minded new employee. On a business trip with her boss, she accidentally drinks alcohol despite not being able to drink and ends up getting drunk. When her boss takes her back to the hotel, Kousuke makes a mistake in the reservation and is only able to reserve one room, so they end up sharing a room... At first, Kousuke resists her virile boss, who attacks her, saying "I have a boyfriend...", but contrary to her words, she is so sensitive that she moans and climaxes over and over again. When it comes to sex, the failed subordinate changes completely and becomes a lewd woman who seeks her boss's dick herself.