Spoiler Alert: Rainbow Rocks, Part Two

: Some vague amount of time later, in the next scene, we're back at Canterlot High. Sunset Shimmer, the reformed Equestrian villain from the last movie, was having trouble fitting back in. Personally, I'm still amazed that Princess Celestia's ex-student isn't serving jail time. I mean, if you turned into a she-demon and mind-controlled an entire school in Equestria, you'd have a fourty-sixty chance of getting completely pardoned. But on Earth? The fact that Sunset isn't serving a life sentence is simply amazing.

: I still don't know how you know these things and that bothers me. Canterlot High was planning a Music Showcase, and because everyone in our multiverse seems to have some degree of musical talent, the human versions of the other five Elements were practicing to join the Showcase as the Rainbooms. This brings us to another song number. Wow, two song numbers in the first seven minutes of the film? This movie was clearly relying on the film's soundtrack to make a lot of revenue.
: Anyway, their band still rocks. Though human me seems to be kind of arrogant and dismissive. Where'd she get THAT from? She didn't not even let the band play any of Flutters' songs! And, wait, is that Flash Sentry? Wow, you really DID get a coltfriend in the human world, Twi! Nice going!
: What?! N-no, I don't have a colt, er, boyfriend there! Flash and me are just friends. Really. Good. Friends. A-anyway, Sunset volunteered to show the sirens around the school, as they had become students there. I've always wondered why so many of us interdimensional visitors are granted admittance to the school. I mean, did any of the others fill out any paperwork or show identification to the school staff? I know I didn't. Also, it's a good thing for them that these girls had mind control, because otherwise their obvious attempts to not look evil would have gotten them in a lot of trouble. I mean, come on, Winnie the Pooh could maintain a better deception than they could!

: In yet another song number, the Sirens mind controlled the students into turning the Music Showcase into a Battle of the Bands, sowing conflict and division among them. Though at least this song was more relevant to the plot. Still, I hope that it was the only the mind control that made this technique effective. Because otherwise it'd be really sad to see the entire school fall for the exact. Same. Conflict that Sunset used on them in Twilight's last adventure.
: Anyway, as the Sirens absorbed the fart cloud of negative emotions from the students, Sunset and the Rainbooms remained un-mind-controlled, probably because of the lingering aftereffects of handling the Element of Magic in the first movie. So, they went to Principals Celestia and Luna to tell them about the Sirens' eeeeevil magic. But the Sirens had already mind-controlled the Principals to support the Battle of the Bands!! Wow, pretty smart for a bunch'a Jem and the Holograms villains.
: Um, regardless, the Rainbooms decided that they needed the actual Element of Magic to fight back, so Sunset sent me a message across dimensions via a magical book. After hearing their story, I realized that the Dazzlings were the three Sirens that Starswirl the Bearded had banished a thousand years prior after they tried to....well, I'm sure you can guess.

: Still, while I hate to question the Most Important Conjurer of the Pre-Classical Era, banishing world-class magical villains to a reality with few to no magical defenses was probably not Starswirl's finest moment.
: I know, right? Guess he must of not had his coffee that day. Anyway, Twilight quickly built a doohickey to use the interdimensional book to alter the magical portal so that it could work again, even though the portal was closed at the end of the last movie. So, in about one minute of screentime, we got rid of any sense of drama or suspense that might've existed due to her leaving during the first Equestria Girls. Great idea, Hasbro!
: Wha....what the hay is Hasbro?!
: Oh, Twilight! That's on a need to know basis. You should know that!
: HOW COULD....one of these days I am going to learn not to question your idiosyncrasies. Hopefully, that day will be soon. Anyway, at that point, the Rainbooms headed to a pre-competition party to use our inherent magic on the Sirens. Unfortunately, we weren't able to use it to activate our attack like we had last time.