There's another friendship crisis in another far away place, this time the land of the llamas, and Twilight's magical map once again calls on a heroic pony to solve it. But this time the map doesn't call Twilight or any of her friends, this time it calls somepony else entirely.
But Trixie's true reasons for accepting the map's call may not be wholly altruistic, and it turns out she's not nearly as over being upstaged by Twilight during their past encounters as she lets on.
May the gods have mercy on those poor llamas.