While vacationing in Mexico, two similar-looking young women find themselves caught in a chain reaction of mistaken identities. Amelia is a wealthy heiress and business owner, and Savannah is a sweet Mormon girl deciding whether or not to serve a mission. When they end up on the same flight to Phoenix, Savannah and Amelia unravel the sequence of events that wreaked havoc on their trips, and they make plans to resolve the subsequent misunderstandings. But their flight is cut short when the plane crashes, killing one of the young women and plunging the other into a world of intrigue and deceit where identity means everything.