This story is a sequel to A Stitch in Time

Having discovered the message left for her by Star Swirl the Bearded in the distant past, Twilight once again finds herself caught up in the middle of a struggle against forces far greater than herself. In order to even stand a chance she'll need to travel further and wider than she ever has, and forge some unlikely alliances with old enemies. All to bring down the powers that have manipulated and shaped her entire life, and retake control of her own future.

The conclusion of the Time Loop Trilogy, which began with Hard Reset
Available in Spanish thanks to dgs1993
Series TV Tropes page

A hundred and twenty years have passed since humanity almost completely vanished from Earth and the world moved on without it. Today, on an archipelago off the northern tip of Scotland, there is a small town that has been repopulated by a peculiar little herd of equines.

Its young leader sets out to carry on his father's legacy, as difficult as the old pegasus' long shadow may make it for him. Life is harsh on the northern isles. The aftershocks of the magical transformation event are about to make it interesting as well.

A side story to Starscribe's fine work The Last Pony on Earth.

Since chapter 16 the story is edited by Doppler Effect and Fistfire. So is the beginning up to and including chapter 3 by now.

Cover art by the amazing quiet-victories.