choi heeyu smart beautiful his dad married kim sohee a single mom with 6 handsome sons but her brothers doesnt accept or like her well one person does that person is do kyungsoo well do kyungsoo is the only one who welcomed heeyu with a smile on his face but theres a person that knows heeyus secret well you see that person is her brother oh sehun sehun knows heeyu,s secret heeyu dated luhan years ago then she breakup  with him because she tought their relationship wont workout then luhan got