Stressed from work and feeling distant from her husband, Maki Hojo finds herself lonely when he leaves home for a company training session—despite telling him about it, he doesn't even reply. On the day of the training trip, her admired superior, Ozawa, joins the outing. The after-party gets lively, and everyone heads to a hotel. Joined by coworkers, they continue drinking in Ozawa's room. One by one, the others grow tired and fall asleep, leaving only Maki and Ozawa behind. As the night deepens and their intoxication intensifies, the tension between them slowly dissolves...