You need a boy to make you smile.

Choi Sooyoung is one of the stars of SMent. She currently had her 8th anniversary there and is very happy to be in this company with her friends, the members of Girls' Generation. She also is very good friends with Park Chanyeol, a member of EXO. They know how to have fun together and they know everything about each other. Lastly, Chanyeol is fighting against the unsual feeling he gets when he cuddles with Sooyoung. It's nothing special, she's your best friend is what he thinks.

Everything turns into complete chaos as Sooyoung starts dating Wu Yifan, a trainee from China. He isn't like Sooyoung. He's erted and thinks about all day. He ain't no good in Chanyeol's opinion. But Sooyoung didn't listen to her best friend and gets completely lost in Yifan's charme. She changes. A lot. Will Chanyeol be able to stop her? Will he be able to save her?

Will he be able to show her how much more he can give her?