Kieran's Adventures of My Little Pony: Equestria Girls - Rainbow Rocks is another upcoming MLP:EG crossover film to be created by Kieran Quarles. It appeared on Youtube back in 2018, but the remake version will appear on Youtube on September 27, 2023.
Plot[]
Former Canterlot High School bully and student of Princess Celestia, Sunset Shimmer, who has reformed after being defeated by the magic of Twilight's crown, is ostracized by most of the school despite her efforts to atone. Her only friends are the counterparts of Rainbow Dash, Applejack, Pinkie Pie, Fluttershy and Rarity, who have formed a rock band called "the Rainbooms" to participate in the school's upcoming musical showcase. The five girls discover that the magic left over from Twilight's crown has given them the ability to grow pony-like ears, tails, and wings when they play their instruments.
Hoping to make a fresh impression, Sunset gives a school tour to three new students – Adagio Dazzle, Sonata Dusk, and Aria Blaze – and informs them of the showcase, unaware that they possess magical powers. Calling themselves "the Dazzlings", the trio perform a song that turns the other students aggressive and competitive towards each other, convincing them to turn the showcase into a Battle of the Bands. Sunset and her friends are protected from the song by their own magic, but fail to convince Principal Celestia and Vice Principal Luna of the danger. Sunset remembers a magical book kept by Princess Celestia, her mentor from Equestria, which she uses to send a message requesting Twilight's help.
Receiving Sunset's message, Twilight deduces that the Dazzlings are sirens from Equestria that feed on negative emotions to fuel their singing powers for their goal of world conquest. Twilight uses the book's magic to reactivate the portal, allowing her and Spike to return to the parallel world. Twilight and the girls attempt to lift the Sirens' spell, but it takes no effect. Concluding that they must perform a musical counter-spell, the girls enter the Battle of the Bands to give Twilight time to complete the spell. The Rainbooms face hostility and sabotage from the other bands throughout the competition, which raises tensions among Twilight's friends.
Desperate for time in the semi-final round against Trixie's band, Rainbow Dash performs an egotistical song to substitute the counter-spell and nearly transforms, which forces Sunset to ruin her performance to keep her from exposing their plan to the Sirens. The Sirens intervene to allow the Rainbooms' advancement to the final round anyway, which prompts a jealous Trixie to trap the Rainbooms beneath the stage to take their place. The girls enter a five-way argument (Applejack over Rarity focusing too much on their costumes, Fluttershy over Rainbow Dash being too egotistical and not playing any songs she wrote, and Pinkie because being in the band isn't fun at all), allowing the Sirens to absorb their magic. Realizing that their constant fighting is interfering with the counter-spell, Sunset convinces the girls to resolve their differences, while Twilight reasons that playing together as friends will make the counter-spell work.
Spike rescues the girls with assistance from DJ Pon-3, whose headphone music protects her from the Sirens' spell. DJ Pon-3 provides a sound system that the Rainbooms use to engage the Sirens in a musical battle. Overwhelmed by the Sirens, the Rainbooms are joined by Sunset and with her help, the Rainbooms are able to destroy the Sirens' pendants, the sources of their powers. Afterward, Twilight and Spike return to Equestria, while Sunset uses Celestia's book to remain in contact with Twilight.
In a post-credits scene, the human world's version of Twilight is shown investigating the strange magical activity around Canterlot High.
Transcript[]
Kieran's Adventures of My Little Pony: Equestria Girls - Rainbow Rocks/Transcript