What would happen if you fell in love with your best friend's girlfriend? Well,ask Niall, he knows all about it. Ariana doesn't like One Direction, never have and never will. Her twin sister Ali, however, is a die-hard fan. Nontheless, an unexpected feeling strikes her when she meets none other than Liam Payne himself. She's in love. Problem: Niall is too. And he's torn apart between admitting his feelings for Ariana and loosing his friendship with Liam. When disaster strikes, will the two of them be able to forget their differences and work together to save Ariana?