Chelsea O'Callegan is a horse crazy, 17 year old, Irish girl. The past two years without her best friend Niall Horan have been full of heartbreak and changes that she isn't exactly pleased with. But when their paths cross in an unlikely place, Niall realizes how much he needs her in his life. Can he get her to forgive him for leaving her and forget about her past relationships and open her heart up to love? Or is it to late?