You was pregnant in age of 16 but you keep it secret from the school as you always wear a big cloths to cover your belly. One day, its was suddenly when you have to give birth in school while learning in class. You was quickly walk and enter the toilet when nobody is there.

Lee Do Hyun is a guy from next class who notice about your weirdness when you both bump to each other when you was walk quickly in pain. As he know about it, he really want to take care of you and her baby.