Kim Soo Jin is a girl who is a new artist at YG Entertainment. Kwon Ji  Yong and Kim Soo Jin have dated for 4 years but Mr. Kwon never accepted it. After a while, Soo Jin got into a car accident and forgot everyone. Her parents also despised the Kwon family so they never mentioned his name or anything about him in front of her. When they meet...will she remember her longest love?