Your name is Choi Jin-Kyong and you are almost eighteen. Your mother calls you "Jin-Jin"

Your father left when you were five. You live with your mother and your grandmother. 

You are not in school, actually your grandmother teach you at home.  

--

Baekhyun, Chanyeol, Sehun, Kai, Suho, D.O.

These are the "aliens". They are from EXO planet. They are EXO-K.

At EXO planet they had a mission to take care of The Tree Of Life, but they failed. 

So they were sent to planet called Earth, to find someone who could teach them love, wisdom and responsibility.