Mckenzie Parker, younger sister of The Wanted's Tom Parker, is always treated like his daughter. And that means no boys. So what happens when she meets the one and only Niall Horan? And what if she starts to like him? Will her brother, the singer in a band who doesn't like Niall's band, let her date him. Or will he make Mckenzie realise that she is Falling For The Wrong Boy?