MASK: a covering for all or part of the face, worn as a disguise, or to amuse or terrify other people...

Nice yet cheerful 10 years old choi jiwon is living a perfect life. she is the only daughter of wealthy, kind hearted parents and surrounded with people. She never imagine her perfect life will gone when her parents being killed. Not only that, her supposed to be guardian stole her money and throw her out from her house.

Fortunately, her parents close friends found her in the street around her house. They took her, take care of her and make her their family member.

choi jiwon now become kim jiwon. a girl who didn't want to get too close with people and a girl who wear a fake smile around people. She try her best to keep her past from everyone so nobody would bullied her and use her.

there's two people who can see her true smile... her foster parents!! sometime her foster brother suho will see it too.

One faithfull day lead her to meet leo, a guy who will change her life... jiwon, suho and leo will learn something and change their life... but there's one thing, leo is suho biggest enemy!!!

what will their fate???

jiwon with her friendly mask...

suho with his perfection mask...

and leo with his cold mask...