Joon Sang moves to a new high school in search of his biological father. Yu Jin and Sang Hyuk are close childhood friends, although Sang Hyuk wants to be more than a friend, Yu Jin sees him as a brother. On a trip together with other high school mates, Oh Chelin, Jin Suk and Yong Kuk, Yu Jin is saved after an accident by Joon Sang. They become close and she opens
