Harry Potter, after a beating by Dudley and friends — with the help of a real gang member — wishes he had somewhere safe to go, and starts crawling home. He ends up in Equestria. The CMC find him. A year later, an owl brings his Hogwarts’ letter!
When he was nine, Harry became a unicorn when he fell through a portal into the Everfree Forest outside Ponyville. Now, the Goblet of Fire has hauled him back to Hogwarts, still as a unicorn. A unicorn taught by Twilight.