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