The Abyss consumed all, and brought darkness on Equestria. There is no sun, no moon, no stars. It is the end.

But, Spanner Works has managed to put together a time machine to go back in time and prevent all this from happening. They just need somepony to go back.

That somepony is Silver Spoon.

Things aren't helped when she overshoots her mark. At least she gets to see how the Knights of Harmony gets formed.