Taeyang Group is the largest Conglomerate in South Korea. The Choi family who runs Taeyang has supposedly been under a curse for a hundred years that the first bride of the eldest son will always die. When the wealthy heiress Jang Yi-kyung disappears right before her wedding to heir Choi Kang-joo , Na Doo-rim , a lookalike impostor, is brought in to take her place. Unlike the cold and calculating Yi-kyung, Doo-rim is sweet and sunny, and Kang-joo genuinely falls in love with her. As the wedding plans progress, Kang-joo and Yi-kyung's mothers both scheme and plot behind the scenes.