Sang Hee is a young trainee at Bighit Ent. 

She was scouted at the age of 19, and has been working hard to prove herself for two years. With others around her becoming successful, showering in their fame, she worked away in the studio for hours until she was sent home for the night.

One day as the trainee is dancing persistently to a song, three young men walk in on her. This was the very highlight of her years as a Bighit trainee. And what changed her life...for the better?