After facing the Dazzalings and graduating from Canterlot high Sunset Shimmer heads back through the portal to Equestria but when she gets to the other side she finds out she is not in Equestria. But a wasteland near a sign that says 'New Vegas 5 Miles' and on the other side of it is a group of people called the legion. Now she looks for a way home and maybe she can get help from a new friend?

(Fallout New Vegas crossover)
takes place a few years after Rainbow rocks