Tilly Prescott is an impulsive college student whose just been given the chance of a life time. During her summer vacation, Tilly gets to travel to London to study abroad. She's enjoying every minute of her experience, making new friends, meeting new boys, oh and one of those "new boys" just so happens to be Harry Styles, a member of the worlds biggest boy band. But committing to Harry is easier said than done when he's not the only boy fighting for Tilly's heart. Who will she choose? Or will she choose anyone at all...