Alot has happen to Equestia after half a year: The Rising of the Crystal Empire, Changeling attacks, Twilight's Transformation…Alot to be had for the land of pony. And with humans living amongst them, it's quite a hand-er, hoof-ful!

Six months after the events of Friendship is a Miracle, Equestria is preparing for the Summer Sun Celebration once more. But an old foe returns from the past, intent on bringing the land of ponies under his heel once more.

With Equestria warped into a hellish landscape, the Elements of Harmony useless, Graham, Aramis, Bromley and Jack must band together to overcome the challenges thrown their way, or all shall be lost.

The shadow of Sin has fallen.
And whether our heroes fail or triumph, nothing will ever be the same.