Sun Ah, Tae Woo, Kwak Woong, and Do Woo are workers at a company. Sun Ah and Tae Woo struggle to keep their office romance a secret. Do Woo has a one-sided crush on Kwak Woong and hopes to confess her feelings to him. When Sun Ah and Tae Woo's relationship is revealed and Do Woo decides to take action on her feelings, they come to realize that office romances are not so easy.