A possible concise summary is:
Two friends, Cash and Nico, explore an end city in Minecraft and find an elytra, a pair of wings that allow them to fly. Cash gets the elytra first and tries to fly over the void, but falls and becomes covered in obsidian. He meets a family of obsidian people who try to adopt him and give him a pet spider. He also meets a talking dog who helps him escape with a powerful pickaxe that can break anything. He returns to Nico and breaks the bedrock portal to get back to the overworld, where he turns back to normal. They decide to never go back to the end again.
Some possible facts extracted from the text are:
1. Nico and Cash are friends who are looking for an end city in Minecraft.
2. Cash finds an elytra, a pair of wings that allows him to fly, but he loses it when he falls into the void.
3. Cash gets turned into obsidian by a curse and meets a family of obsidian people who try to adopt him.
4. Cash escapes from the end with the help of a dog and a kid with a pickaxe that can break bedrock.
5. Cash returns to his normal skin when he gets back to the overworld.