Four years ago, Qiao Xu was forced to break up with her boyfriend Xu Si An. Four years later, he suddenly reappears as her new boss. Though Xu Si An seems cold and vengeful on the surface, Qiao Xu mistakenly believes he is already married and deliberately keeps her distance. As they clash in the workplace, the truth behind their breakup and the deep feelings they never let go of gradually come to light. After clearing up the misunderstandings, the two join forces to face family opposition and business challenges together.