Kildeez: mid-twenties, love of ponies, and with enough issues to write a book on. Sifty: former brony, makes Kildeez look like a picture of mental stability. Drop them in Equestria, sure, why the hell not?
When a portal to another world appears outside Canterlot, the ponies' initial reaction is of enthusiasm, hoping to greet these strange aliens with open hooves. Too bad this world was already visited by another Equestria...