Twilight Sparkle is dead.

After getting stabbed through the heart during a trade negotiation with the Griffon Kingdoms, Twilight Sparkle finds herself in the afterlife, where she sees her worst nightmare: Discord. Discord, however, gives her the chance to change her fate, by going back in time and changing events. But will Twilight have to suffer the consequences of her actions? Will the future change for the better, or will Twilight have to go back again to set things right?

(Based on the Star Trek: TNG episode "Tapestry")