While on a mission, Song Yao, a law enforcement team intern, mistakes Pei Che, the president of Jianghai Group, for her undercover colleague. On the other hand, Pei Che, who was on his way to get married to a stranger at his grandmother's request, mistakes Song Yao to be his marriage partner. The two get their marriage certificate by accident, and thus begins the love story between a woman and her "kept" man.