It was over. The Dazzlings were defeated in the Battle Of The Bands by the Sonic Rainbooms. The necklaces shattered, shattering their lives. Their self-concept was also shattered. Their music career was over. They thought they would never sing again.

Suddenly, Twilight Sparkle returns to the Equestria Girls universe to meet up with Sunset Shimmer. Both noticing the Dazzlings have changed, they offer them a deal. A deal to go back to Equestia to start over. To get their necklaces repaired and drained of their evil magic. To become ponies again. A second chance.

Upon returning to Equestria, the Dazzlings meet a pony named Sapphire Shores. She also loved to sing. Will she help these ponies truly redeem themselves and get them back to singing again?

Sassaflash works at the Cloudsdale Weather Factory's electricity division. Her job is very dangerous: she must harness the power of lightning bolts and zap their energy through a machine that draws out even more of that power. Best of all, she has a pretty good position as Electricity Production Supervisor and gets a good 45 bits a day.

But lately, something mysterious has happened at the factory. All of the machines in the electric division have been stolen from another pony. All hooves point to Sassaflash and her five friends Medley, Dizzy Twister, Cloud Kicker, Cloudchaser, and Flitter as the culprits because they all have pretty good positions in the Cloudsdale Weather Factory.

Determined to prove they're wrong and to clear their names, the six pegasi set out on a quest to find the real culprit. However, if they don't hurry up soon, Ponyville and potentially all of Equestria could lose power forever...