Isabelle 'Izzy' Carter is best friends with the one and only, Niall Horan of the famous band, One Direction. After, she breaks up with her cheater of a boyfriend, she decides that it's time to move on. Little did Izzy or anyone know, that after all that she realizes what she's been missing and who she's been in love with the whole time, her best friend. Their friendship will be tested in ways they could never imagine. What happens when Izzy and Niall have a drunken night together? What happens when their friendship appears to be ruined? Will they ever become friends again? Or more? What happens when Izzy let's her feelings be known to Niall? How will he react? How will each of them be affected by his actions? And how will both of them, Izzy and Niall, come out of this unique situation?