To raise money for her critically ill mother’s treatment, the kind and resilient Nancy is forced to marry Gene—the so-called “black sheep” of a wealthy family—on behalf of her stepsister, a man rumored to have a scandalous reputation. Yet after marriage, she discovers that her seemingly down-on-his-luck husband is, in fact, gentle and caring. As Nancy joins her dream company, a series of coincidences gradually lead her to realize that her sham husband is actually the company’s mysterious, low-key billionaire founder—who is quietly orchestrating a revenge plot.