Have you been live inside other's body?

Yoon Hee has. In a nerd boy's body, Lee Jin Ki. The guy who lives beside her apartment, goes to the same school with her, and the most important part, the guy who crush with her! This was because a fool accident which they fell, rolled down the school's stairs that finished with bumped their head to each others.

So, how will they survive with this abnormality?

Pretend in front of anyone that nothing's wrong. Fortunately, Yoon Hee parents was going abroad, and Jin Ki only lives with his brother, Lee Tae Min. So, they don't need to playing that such drama in their home.

Will they return to their own bodies? How? And, how they take a bath? :p