To raise 80,000 yuan for her grandmother's surgery, Jiang Xiaoyu essentially sells herself: she agrees to a one-year sham marriage in exchange for a black card. A year later, she eagerly prepares to get divorced, only to discover that her mysterious husband has disappeared without a trace, while Qin Muchuan, the president of the new company she has just joined, is coldly threatening to fire her. By day, he is the boss who makes life difficult for her; by night, he is the gentle-voiced 'stranger' on the phone. When Jiang Xiaoyu finally discovers that the supposedly cold and heartless Mr. Qin is actually her bargain husband whom she hasn't seen in a year, the divorce drama is only just beginning.