Yoon Da-in, the sole daughter of the top 0.1% chaebol Yoo-won Group in South Korea, hides her identity in pursuit of true love and dedicates herself to her boyfriend Kim Woo-jin for three years. However, Woo-jin's family despises her as a 'pauper' and throws a 600 million won dowry onto the floor. To make matters worse, Da-in is impersonated by her rival Yoon Seol-ah, who steals her place as a bride. Ultimately, she is branded a pathological liar and a fraud and driven out. At that moment, Yoon Da-in decides to show the betrayers the 'true dignity of a chaebol'...