SYNOPSIS

Eun Ha-won (Park So-dam) is an ordinary 20-year-old girl. If there's not ordinary about her, she has lost her mother when she was young, and her step-mother and step-sister torment her. While she's trying to save up money for her college by herself, she gets involved in the family business of the wealthiest group of Korea, the Sky Group. And she starts living in the Sky House with 3 cousins of Kang Hyun-min (Ahn Jae-hyun), Kang Ji-woon (Jeong Il-woo), and Kang Seo-woo(Lee Jung-shin)...