[*update* Season 4 now makes this fic almost incompatible with MLP canon. Derp.]
"Sing, O Muse, greatest of them all, Ingram the Melodious, of a world at war, a war of five-hundred years, a war between Ponies, Dragons and Hoofricans. Unto this world, two score and two years before the founding of our blessed Equestria, came a Blue Box bearing the Stallion of Time, and the mares of a distant land. And in their wake followed the villain, Master Tympanus, and the countless evils that were for countless generations imprisoned. Sing of their valiant deeds and the work of my predecessor, Starswirl the Bearded. Sing of their journeys, their tactics, and their battles. Sing lastly, O Muse, of the one noble pegasus who paid the ultimate price in the greatest act of love and friendship ever witnessed by this world."
- From Clover the Clever's Legend of the Blue Box, written 11 A.E (Anno Equitum)

The Doctor and Derpy bring the Mane 6 back to the Pre-Classical Era where the three kingdoms of Ponytopia, Hoofrica and Drakonia have been at war for five-hundred years. But a new threat emerges that threatens the whole world, and it's up to the Doctor, Derpy and the Mane 6 to stop it and bring peace between the three kingdoms. Is the magic of friendship powerful enough to save the world, or will time be forever rewritten by a different master?

(Credit for Starswirl the Bearded's design on the cover image goes to Emkay-MLP on Deviant Art (http://metrukuta.deviantart.com/art/Star-Swirl-the-Bearded-265360340). Thanks Emkay!)

(I originally wrote this in script form as a submission to a MLP screenwriting contest, then I decided to put it into prose form so I can submit it as a fan fic. So if you find that it sucks or is difficult to follow, I'm sorry I wasted your time.)