Robbie Hart is singing the hits of the 1980s at weddings and other celebrations. He also can keep the party going in good spirit, he knows what to say and when to say it. Julia is a waitress at the events where Robbie performs. When both of them find someone to marry and prepare for their weddings, it becomes clear that they've chosen wrong partners.Robbie, a singer, and Julia, a waitress, are both engaged, but to the wrong people. Fortune intervenes to help them discover each other.