Han Seungyeon left for California for adventure before going back to Seoul and starting her first year at Seoul University. After 3 months of adventure she returns to Seoul and to her boyfriend of 2 years, Kim Myungsoo. On the airplane, she meets this guy, Nam Woohyun, who has went to California to visit his sister and is going back to Seoul to start his second year at Seoul University. Seungyeon goes back to Seoul and finds out her boyfriend is cheating on her, but avoids it because she still loves him. She starts school but this hidden secret has been taking over her mind. She breaks up with him but can she ever find true love again?