A D&D gamer is sucked into the land of Equestria in the form of his favorite custom D&D character, with absolutely no understanding of why or how.
What will happen to our pseudo protagonist? Will he go feral from being hunted? Will he find allies? Even if he does, would they still accept him if they discover the cruelty of his homeworld? Will he manage to reach civilization before he starves or goes insane? Or did he already go insane thinking he was in the body of an RPG character? And most importantly, "Why can't I cast any flipping spells!?"

Let the torture story* begin...

And if it wasn't clear: this is a D&D crossover. (5e rules for all those rules lawyers out there. Corrective comments welcome!)