When Braeburn forgets something in his visit to Ponyville, Rainbow Dash goes flying after his train to give it back, only to find out Big Mac is on the trip with him. With the Appleloosan going to the restrooms, they argue- until their car, the last one of the train's line, is mysteriously cut off. Lost in the desert, they now have to survive a ghost town, a pair of ancient, cursed bracelets, Las Pegasus, one very mad scientist, so much more, and, most of all, each other. But there may also be more to their story, like three pairs of hooves looming over their destiny. First, though, they're gonna need to get back to Ponyville.
It's my first MLP fan fiction, but I do so appreciate feedback.