Ok as most know I watched MLP and though I for my self don’t see me as a brony I also watched the Equestrian Girls Movie that came in early summer into American theatres. I watched it on youtube though.
And although the brony community is surprisingly happy with the movie and it is actually enjoyable if you can overlook some major plot holes I want to outline how this already quiet OK movie (because of good music, protagonists, fanservice and animation, and a few good plot elements) an actually good one:
The film begins with Twilight and her friends going to the crystal Empire to celebrate Twilights coronation again. Coincidentally that very day Sunset Shimmer returns through the mirror, planning to make up with Celestia, feeling a little remorse and maybe even homesick. But than she learns of Twilight existence, how Celestia simply replaced her. Twilight on the other hand learns about the portal and it 7 days (!) time frame which it is open, and it would take 30 moons (whatever that exactly means) until it opens again.
She pretends to be nice and forgiving first and learns about how Twilight and her friends regained the Elements of Harmony, that’s when she decides to steal the crown, as an act of revenge against Celestia and Twilight who stole her place as a pupil.
Twilight wakes up in the night, as Sunset Shimmer steals her crown, chasing her to the mirror Twilight fights her of, resulting in the crown falling through the mirror, which she, because of SS already knows is connected to another world. Sunset takes the first opportunity to follow the crown and Twilight,without much thought followed by Spike who came along, follows her, arriving infront of a school building.
It is early in the morning, school is just about to start, but Twilight naturally is very confused by her looks and everything. She finds out that Fluttershy found the crown, which looked exactly like the crown for fall formal, and gave it to the headmistress Celestia.
But of course Sunset Shimmer realizes and even expected Twilight to follow her. She challenges her, of course both could just try to steal the crown but that wouldn’t be as satisfying as defeating Twilight, showing her that she is a failure. So who ever gets to be fall formal princess will get the crown.
Sunset Shimmer is kind of the school Diva, popular an feared with her clique consisting of her as the leader, Trxie, as her best friend and Diamond Tiara and silver spoon, two freshmen who basically would do everything for them they are.
Twilight on the other hand for the moment only has Fluttershy, whom she helped out against Sunset Shimmer before. She learns that her other „friends“ are fighting, but manages to reconcile them and bonding them against the common enemy: Sunset Shimmer.
While Twilight is still busy managing to reconcile her friends Sunset Shimmer and Trixie already start running an anti-Twilight campaign including embarrassing photos made during Twilights first day at the school. Twilight and her friends try to save the day by digging up the old „Wondercolt“ uniforms to again unify the whole school, but Sunset Shimmer & Co try to undermine this new found unity by spreading rumours and secrets, basically telling the leaders of each group if they didn’t vote for them, everyone would get to know their secret (stuff like that the jock also likes dolls etc).
Soon the mane six realize the change of heart and fear in the other students, puzzled what to do next. Meanwhile Diamond Tiara and Silver Spoon got an Idea they think will impress Sunset Shimmer, they trash the auditorium where everything is already decorated for the dance in a few days. They feign evidence to frame Twilight for it so that she would be taken of the competition but that is exactly not what Sunset Shimmer wants! Angry with the two, she is the one who saves Twilight, she wants to have this competition to crush Twilight and show, she is more worthy of the crown!
In the end the trashing of the auditorium was great for Twilight because while she and her friends tidy everything up, other students she this and join, because of some confessions triggered by the mane six the thread of secrets being revealed vanishes because the students realize friends will like you even if you have a hobby they might not share.
The last days Sunset Shimmer and her clique try to discredit Twilight any way possible (this could well be done in a song) but somehow it always turn all right for her.
Finally the night of Fall Formal arrives and Twilight wins by a landslide. While Trxie and the others are a bit annoyed they admit Twilight just deserved it, but Sunset shimmer is enraged by her defeat. She storms up and takes the crown for herself saying Twilight cheated and she should have been the princess! And even offences her friends saying it was all their fault she lost.
Than something no one had forseen happens, the crown reacts to Sunset Shimmer and transforms her. Consumed by her rage she enslaves the students planning a march to Equestria to take revenge on Celestia and become Princess instead.
But Twlight and the mane six together with Trixie, Diamond Tiara and Silver Spoon who want their old Sunset Shimmer back, fight her by activating the magic of friendship. It is Trixie who manages to get through to her friend, saying how much she liked her even with her flaws and temper and that she didn’t need to be a princess or anything, just her self.
With the power of rage weakened because of her friends words, Twilight manages to regain the crown, Sunset Shimmer turns back to normal and the student are freed from the ban as well.
Since Sunset Shimmer now for the first time in her life really saw what friendship could do she feels redemption of her actions, and is grateful to Trixie as well as Twilight and the mane six. She admits her wrong doings and explains just how hurt she felt when she saw how she simply had been replaced. But she decides to stay in the human world, since here she found friends.
So after a nice Fall Formal dance Twilight can return home where her friends, who of course realized her absence by now and counted two and two together, await her anxiously.