A changed Nightmare Moon must save Equestria from the Changelings after all other lines of defense.

Twins, Daylight and Starflight, fight for the right to rule Equestria.

After the accident with meep and nenatoads, Phineas, Ferb, Candace, Isabella, Baljeet, Perry, Stacey, Jeremy, and Buford are teleported into Equestria. A sinister spirit attacks it.

Creatures that say fight each other.