After breaking up with her long time boyfriend, Xander, Addison is heart broken to find that her younger sister, who is a complete beeyotch, is pregnant and getting married. And to who? None other then the man she is still in love with even though they just broke up, Xander. As she tries to get her head around the fact they're actually getting married and it's not some practical joke, she finds out something that will shake her world. But when everyone has a secret, it's not just going to hurt them but everyone they love, follow Addison as she has to prepare for what could be the wedding of the year.