My Little Pony: Equestria Girls - Legend of Everfree, on Netflix (no longer on the service)
IMDb; MLP Wiki; Rotten Tomatoes; Shout! Factory; TV Tropes; Wikia; Wikipedia
streaming sites: none that I know of
Caution: potential spoilers.
This is the fourth movie in the "Equestria Girls" franchise, following Friendship Games. It takes place between seasons six and seven of My Little Pony: Friendship Is Magic. Unlike the first three films, it didn't have a theatrical release. It was first aired in Latin America in September 2016. Also unlike the first three films, its TV premiere in the United States was on Netflix (in October 2016), rather than Discovery Family (where it first aired in November). It was also released on DVD and Blu-ray in November 2016. But the first time I got around to watching it (on DVD) was in July 2018. (So... technically this is a TV movie, but I originally put my review in my feature films section, before moving it to my web films section, when I eventually started that.)
First, I should mention a couple of things that I didn't reveal in my review of the previous movie. One is that the human world's Twilight Sparkle's pet dog, Spike, gained the ability to speak, which he still has in this movie. Another is that Twilight turned into a magical monster, much as Sunset Shimmer had done in the first movie. But of course her friends ultimately helped her return to normal, and she left Crystal Prep to begin attending Canterlot High. But, just like Sunset was in the second movie, Twilight is worried about being accepted by everyone after what she did in the third movie. Also, she's been having nightmares about her villainous self (who is now referred to as "Midnight Sparkle") taking control of her again. Sunset does her best to help Twilight get over her fears, but it proves difficult. Meanwhile, the students from Canterlot High go on a trip to Camp Everfree, which is run by a brother and sister named Gloriosa Daisy and Timber Spruce. Timber soon starts flirting with Twilight, which the other girls all think is "adorable." But Flash Sentry is kind of jealous, since the feelings he had for the Equestrian version of Twilight (in human form) are hard to let go of, especially now that the actual human Twilight is around all the time. But Sunset helps him with that. (And at one point, he reminds her that the two of them used to date, which I had totally forgotten. He says he wants to start over as friends, but I think they might eventually get back together as a couple.)
Anyway... at one point, Twilight discovers that she has new telekinetic powers, which she totally doesn't want, because she's afraid it means Midnight Sparkle is taking over. Sunset also sees Twilight's power, but she believes it's a good thing. Still, she abides by Twilight's wish that she not tell any of the others about it. And later on, the other girls start developing their own unique powers, but Twilight still wants to keep hers secret. Also, one night Timber tells all the campers a spooky story about a magical being called Gaea Everfree, who he says appeared to his and Gloriosa's grandparents when they first started building the camp, and said that one day she would return to reclaim the woods.
There's also a businessman named Filthy Rich, who is going to take over the campsite to build a spa if Gloriosa doesn't pay him the money she owes him. So she's trying to hide from the campers the fact that this is the final month the camp will be open, while also trying to make it the best camping experience ever. But Timber isn't happy about this... and uh... there's friction between the two of them, which of course the campers notice but don't know what it's about. But Sunset becomes suspicious of him, which makes her worry about his continuing flirtation with Twilight.
And... there's all kinds of other stuff going on. I don't want to spoil any details of the camping experience, let alone the magical battle that eventually happens. But of course everything works out in the end. Meanwhile, the movie is funny and has good songs and some decent drama. Plus a fun little post-credits scene. And I guess that's all I can say.