Yoon Tae Oh (Choi Min-ho) is a first-year university student. He had an easygoing temperament. “Tae Oh” is a friend of “Han Song Yi” (Park So Dam) since childhood. Now, he starts to have feelings for Song Yi. She has a bright personality and positive. Meanwhile, Tae Oh have a friend, Seo Ji Ahn (Kim Min Jae), was a very kind and gracious. Their love triangle begins here.