Every teenage girl screams their names. Makes fan signs. Go to all of their concerts. And do nothing but listen to their music all the time. The world loves them. But of course not everyone favors them. Take Madison Campbell for instances. She cannot stand One Direction at all. But she has to deal with them because her little sister, Adrian, is their BIGGEST FAN. So what all happens when her little sister gets bold enough to sneak into their tour bus?