Lee Na Yeon is made an orphan when chaebol heiress Park Yu Gyeong causes the death of her mother, Lee Yu Nae, in a traffic accident. Yu Nae and Yu Gyeong had been rivals in love for the same man, Jang Gyeong Wan, with Yu Gyeong ensnaring him into marriage by claiming the child she was carrying was his. Gyeong Wan attempts to make amends for abandoning his college sweetheart by trying