There's a girl named Yeojoon. She is beautiful, she has beautiful eyes and y lips. She is a smart student, she go to Korea to do her college life. She has a kind heart too. She always wear pants, Dress or skirt are not her style. Because with pants she can show her skill in taekwondo.

One day she meet with 9 handsome boys. It's unexpected that she can meet them. For her, They're not only her friends, but also her family. She always happy with them. She can tell everything to them. With them, she can forget her past.

Then there're 2 boys who loved her, but she still afraid because of the scars from her ex boyfriend.

But when they in a peace moment , there's something that always ruined and disturb them.
What's that?