Kim Seung-ho, who works at a beer company, is misunderstood by his wife, because whenever Lee Min-ja, a barkeeper, comes to pay for his drink on credit, he is witnessed by his wife. Meanwhile, Noh Neung-geol, a single co-worker, is misunderstood by his girlfriend Kim Yu-hee, because an elevator girl is too kind towards him. After jealousy and envy, and playing cat and mouse, all misunderstandings are cleared, and the two couples live happily.