Free at last, Nightmare Moon just got back from her thousand years banishment on the Moon.

She barely has time to cast a few spells and terrorize the local village and kidnap the Solar Princess that a group of mares burst into the ancient throne room.

As they manage to reactivate and wield the Elements of Harmony, Nightmare Moon tries to summon the foulest beast she can think of to protect her.

It doesn't go well.