My Little Pony: Friendship is Magic: Equestria Girls

Usually when a work of fiction that has nothing to do with high school takes their characters to high school, it usually bombs. Notable examples include
"Shrek the Third," "The Emperor's New School," and arguably "Power Rangers Dino Thunder."
Such was not the case, for the 4th generation My Little Pony movie "Equestria Girls."
Despite the gates of hate being opened full force for the ending of the 3rd season, this story picks up on it with Twilight Sparkle's insecurity at being a "princess." Which ties in perfectly for the main villain of this flick, Sunset Shimmer...who is like Twilight in almost every way except for the fact that Celestia didn't pick her as favorite student, which makes her steal the magical crown of Magic (element of harmony) from Twilight and plunge into a magic mirror to escape. Only Twilight and Spike go into mystery world and find out it just leads to an alternate universe where almost everyone is a teenage high schooler...even the grade school fillies from Ponyville? Ok...
As she adjusts to her new body and (demoted?) station in life, Twilight also does what she does in the show, which is solve friendship problems with the AU other main characters. Which works out fine but then it turns out her magic crown is the the prize in some sort of prom for the high school. With Sunset Shimmer being the mean queen of the school, it's up to Twilight to pull a Kamen Rider Fourze and befriend everyone in the school for the fate of both worlds.
The haterstorm and outcries of the franchise being "ruined forever" was humongous for this film. But surprisingly, it did MUCH better than anticipated. The characters, despite being "humans" (I say "humans" because they've got the same skin colors and hairstyles as their pony counterparts as well as names that would never actually be a human's name.) stay true to form and if you liked the show, you'll like their personas here. Even the cliche'd "now in high school" tropes are downplayed since Twilight never actually goes to class and the shallow love interest seemed more like her acquiring a new friend with potential crush rather than there being actual drama. The jokes don't get old, it's fun to see our favorite (main, minor, background or otherwise) characters as people, and the songs are almost as good as the show's random songy outbursts (with one being as good as any anime opening sequence and was stuck in my head for at least 6 days straight.).
Overall, if you're a fan of "Friendship is Magic" this is a good movie to watch. This show has proven time and again that they're capable of taking horrible ideas and actually pulling off a great product. They've do this stuff with boldness and, so far, nothing really bad has come from it.

Surprisingly, Spike is vital to the plot as well as he is essentially what keeps Twilight sane in this world.