Katie: a normal 15 year old girl, with loads of friends, sassy, and quite the badass. But what happens when she comes home from school one day and finds One Direction sitting in her living room with her Mom telling her that she has a brother and he is THE NIALL HORAN. How will she react to this. Will she accept the lies she has been told her entire life, will she completely block out her newly found brother, or will she accept it and maybe even start to fall in love with one of his bandmates. WELL FIND OUT IN MY BROTHER IS WHO?!?!