The Cutie Mark Crusaders have always been pony friends forever, while crusading for their Cutie Marks together. But today, something weird happens. A villain named Electric Aspect comes to Ponyville to earn the ponies as servants, quite similar to the evil that King Sombra had done to the Crystal Empire. Electric Aspect, King Sombra's pegasus brother, must be defeated. But Princess Celestia and the Elements of Harmony have been imprisoned in a different dimension by Aspect's doing, and it's up to the Cutie Mark Crusaders to stop him. The question is: How?