Lin Yifan, an unemployed young man who owes three months of rent, goes to the Su Group for an interview as the president's special assistant. As soon as he steps inside, he is grabbed by female president Su Qingyue, who has just finished a phone call urging her to marry. "You must be the contractual fiancé sent by my father, right?" Lin Yifan takes a glance at the annual salary of 300,000, and decisively keeps his mouth shut to play along with the mistake. A "Contractual Love Agreement" binds two completely unrelated people together: he has to cooperate with her in acting to ward off pursuers, and she pays him a salary to solve his livelihood. Living under the same roof, by day they are the golden boy and jade girl of the company, and by night they are roommates who fight over the bathroom and bicker over pearls missing from milk tea.