Doo-Rim is a poor orphan girl who lives on a small island and looks after her grandmother. She works hard to save up for her grandmother’s operation costs. One day, she is presented with an irresistible offer from a rich family - she is to pretend to be their missing daughter, Yi-Gyeong, and all her grandmother’s medical bills would be covered in return. As she begins to be trained intensively to fill the shoes of Yi-Gyeong, she falls in love with Gang-Ju (Lee Hong-Ki), who is Yi-Gyeong’s fiancé and the successor to TaeYang Corporation. Unfortunately, a century-year-old curse runs through the TaeYang family – the first son’s bride always dies. Will Doo-Rim beat the curse and prevail?