Everything is different now...(McFly AU)

Dougie Poynter and Anna Simmons were best friends. They were all each other had. They both went their separate ways after high school. Anna became a citizen of America, while Dougie stayed in England with his new band McFly. Anna starts a photography business in New York City. Anything can happen after 4 years. What has changed? What happens when these two old best friends possibly meet again??