Yoon Seol-young faces a harsh reality: a cheating boyfriend of three years, a forced blind date with a divorced man ten years her senior, and the burden of financially supporting her suffocating family. Just when she wishes to escape her stifling life, Ki Tae-hwan, the executive director of Shinhwa Group, rumored to be gay due to his excessively clean private life, approaches her with a proposal: "Let's get married. I'll take you to a higher place." Overnight, Seol-young goes from being the secretary in the executive director's office to becoming his daughter-in-law. But what is the true purpose behind Tae-hwan's marriage proposal?