Qiao Mo has disguised herself as a man since childhood. On the day her stepsister is set to marry Li Zhancheng, the wealthiest man in Jinghai, she plans to exact revenge on the Qiao family for her mother's sake—by ruining the wedding. But by a twist of fate, she loses her first night to that very man. To protect her identity as a woman, she reluctantly helps Li Zhancheng search for the “mysterious woman” with whom he slept, while Li Zhancheng finds himself in the greatest confusion of his life: has he been gay this whole time?