Princess Celestia has just banished her beloved sister Luna to the moon for all eternity... but eternity is a very long time, even for an immortal. Can a strange colt with a blue box help make the time pass more quickly?

Some OCs for flavor, but focuses mainly on the Princess, the Nightmare, and the good Doctor.

Most ponies, when they see a pony with an hourglass cutie mark, would figure that it would mean their talent has something to do with time, or clocks, or another harmless meaning. Technically, the first is true, but there is a hidden meaning beneath it. To those that carry it, they know that the hourglass marks them as refugees, survivors from a war that would make any normal pony go mad from glimpsing just a fraction of the sheer scope of it. These unusual ponies have all found asylum in Equestria, but now, one last escapee will be followed by an evil that will threaten to ignite the conflict anew and bring down their last refuge with it.

But this newcomer not only brings the remains of the conflict with him, but is their best and only hope of ending it once and for all.

The last gasp of the Time War has come to Equestria. The Doctor will find old friends, make new ones...and face off with one of his greatest foes, one last time.

Six unlikely friends meet at the first Summer Sun Celebration, and naturally hijinks ensue. But a forgone conclusion creeps ever closer, and time is not on their side. How can they keep their friendship from shattering? Why are they destined to bear the Elements of Harmony? Who are the strange ponies so determined to make them fail? And under what bizarre circumstances will the world be saved next?

Doctor Whooves, a time traveling pony decides to write a journal about his adventures, armed only by his wits, his new partner, and his limited abilities over time. What stories will this journal hold?