Twenty-two year old university student Hi-ah dreams of becoming a CEO and living a happy and single life until she's 100 years old. "Ji-ah, I've set you up with the grandson of a chaebol." "dad! What the hell are you talking about?" She told herself that she would definitely reject him when they meet. but when she went, her super hot sunbae Yeon-Hoo was there?! And another chaebol's grandson, Seung-Ho appears?!