Park Hye Rin has been in a relationship with Luhan for 4 years. Practically joint at the hip from the day they met each other in highschool Hye Rin has been with Luhan through thick and thin. When he graduated highschool, when both his parents passed away in a car accident, when he took up drinking after the loss of his parents and all through his trainee days at SM Entertainment. And when he finally debuts, leaving him with little time to spend with Hye Rin, she tries her best to be an understanding girlfriend. But, how much of not seeing Luhan can she handle?