Chae Rin is a big fan of Kang Hae Sung's, a singer. One day, she gets a call that her grandma is in the hospital and passes out on the street. Hae Sung decides to stay at Chae Rin's cottage, and Chae Rin tells Hae Sung about her illness. At the cottage, Hae Sung meets the N.CODE members, who are training hard to make a debut.