Kwon Eunhee and Byun Baekhyun were best friends since they were young. They were inseparable and took risks for each other. Eunhee cried on Baekhyun's shoulder and Baekhyun went to Eunhee when he needed someone to make him smile. He saw Eunhee as a sister but she saw him much more than that. She triend her best to just see him as brother because she doesn't want to break their friendship.

When Baekhyun became a trainee at SM Entertainment, they promised they would still communicate but when he met more trainees and grew closer to them, he slowly started to forget all about Eunhee. This broke her heart to pieces.

Two years later, Baekhyun, together with his group EXO, became internationally famous. Rumors also spread that he secretly goes out with Oh Renji, SME's sweetheart. Eunhee still supported him and went to some of their shows too.

What will Kwon Eunhee do about it? Will she come back? or will she just live life?