Mia is a simple teenage girl, she doesn't know her real parents she was lost when she was 4 years old so she did not remember a thing anymore. She is living on her foster parents and one foster brother, they really love her they treat her like their same blood daughter and sister. One day she woke up hearing a good yet shocking news which turn her world up side down she is the long lost sister of Sehun the member of K-POP boy group EXO. She will be living with them for the rest of her life. Will she be able to catch up in her new life style? Is she strong enough to fight the obstacle she will be facing since her brother is famous? And one more thing Chanyeol likes her and so she is, but will they be able to fight their love for each other in the challenges ahead of them? or they will give up and think that being friends is better. Well all you need to do is it find out.