Eun Seo-Yeon (Park Ha-Na) is a warm and friendly woman. She runs a small business that produces cosmetics and sells them on the internet. She also works as a staff member at a make-up salon. In her past, she and her parents were in a very close relationship with Kang Baek-San (Son Chang-Min). He now runs a large cosmetics company. One day, Eun Seo-Yeon learns that Kang Baek-San is responsible for her parents’ tragedy. She becomes determined to take revenge on him for his past deeds. Following her plan, she marries Kang Tae-Poong (Kang Ji-Sub), who is Kang Baek-San’s son.