A human got teleported into ponyville and he is trying not to get "pony-fide". Buy when he meats the mane six and Stryker, he fights them. Here's a paragraph from the story.
"Rainbow. Stop struggling and he won't hurt-" Twilight got interrupted by Dash screaming in pain. "My wing!" she ws desperately trying to get away from the human that was starting to rip her wing off. After her wing got ripped off, she fell unconscious.