Emma Rose, a small town girl from Tennessee, is on her way to England to study abroad. As she settles down and gets use to her new life in England, she meets a guy. This guy is Niall Horan. There's automatically a connection between them. They are both falling in love with each other. So when the time comes when Niall has to go back on tour, he wants to make sure that Emma knows that she is always his. He gives her something that changes her life, for the better. He makes a promise, as does she, to always love her. This is their story of the ups and downs of their love, from beginning to end.