As the night has fallen and the bustling offices have gone quiet, Xu Qing You and Mo Ling Ze first meet due to a misunderstanding. White-collar worker Xu Qing You spends all year round working so much that it's always evening by the time she packs up to go home. She has been in a long-term relationship with Fan Yun Xi for ten years and was preparing for her wedding when she finds out that he cheated on her. Fan Yun Xi explains it was an accident yet Xu Qing You resolutely asks to break up. At this time, Xu Qing You encounters Mo Ling Ze and they immediately start off on the wrong foot. Thinking that they'd never meet again, their paths cross when Mo Ling Ze takes over the business operations at the firm where Xu Qing You is an employee. Because of work, Xu Qing You can no longer avoid Mo Lingze whereas he becomes amused by her reaction.