Twilight and the other Elements of Harmony have saved the land of Equestria from Nightmare Moon, Discord, and the Changeling army, but now they face perhaps their biggest challenge yet. A challenge that lurks behind smiling faces and friendly eyes. A challenge that threatens to overtake the entirety of Equestria and enslave its inhabitants. But the ponies won’t face this threat alone. Help comes in the form of the most unlikely of companions; four teenagers, a hawk, and a blue centaur.

Canterlot vanishes in a mysterious explosion, an explosion which engulfs all of Equestria. Twilight manages to save herself, but the world she finds herself in is not the one she remembers. Her friends have no memory of her, the world is trapped in darkness, and Celestia is missing. Can Twilight figure out what's happened to her and the rest of Equestria before the darkness overwhelms her?