Kwon Jiyong, a nerdy guy who lives with his two sisters and father. He never ever feel the love of a mother in his life and he would want to feel it one day, if that day ever come. He always get the 2nd place in school. Well, he don't mind not being the 1st place because the student that own the title of ' Top Student ' is his long time crush, Kim Taeyeon.

 Kim Taeyeon, a kind, heart-warming and popular girl. Not only she is smart, she is also beautiful and talented. She is what people call ' perfect '. Most girls get close to her because she has 15 boys around her. 

 Yes, 15.

 Well, not really around her. But, you can say that some of the boys are her blood related, some are step-brothers, and some are her cousins or distant relatives. Yep, they are living under the same roof and apparently, the feminine Taeyeon in school never really exist in the house, moreover if all of them are gathered together.

 It would be one heck of an adventure if Jiyong started to get to know her oppas,right?