Obsessed with uncovering the magic responsible for creating the portal mirror she used to recover her crown, Twilight eventually manages to create a gateway to a series of worlds one step removed from her own.
Equestria becomes host to a being who can plunge people into their darkest nightmares with but a touch. He claims to have no ill intentions, yet the ponies are skeptical; how does one do good through fear?
Twilight never became an alicorn princess and instead lost her life as a result of Star-Swirl the Bearded's unpredictable spell. But being dead doesn't prevent Twilight from visiting those she cares for...
There is a secret held in the dungeons below Canterlot, deeper than the crystal caverns into the roots of the mountain. This secret is a creature imprisoned by the Princesses. It is a source of great knowledge, but may ultimately be a great enemy.