The last enderdragon named Ender, who was raised by two humans, named Steve and Alex, when he was just an egg. After the death of his adoptive parents by an evil entity named Herobrine, Ender is left alone in the Overworld. While exploring the vast world, Ender comes across a portal that he has never seen before, after traversing the portal. Ender finds himself in a whole new world, full of creatures called ponies that he has never seen in all his years of adventures. Ender quickly befriends a group of them, after helping them with some evil creatures called changelings. Ender now has a new home and new friends that he loves and vows to protect at all costs. Unfortunately, Herobrine and his army manage to cross the portal and reach Equestria, which aim to conquer and enslave its inhabitants. But Ender won't let them.

(I also want to give credit to user Animator Snake, as I was inspired by his story "From grass to Bedrock" to write Ender. I really appreciate it and recommend his story.)