After a spell gone awry, The Main 6, Spike, and Starlight Glimmer end up in a new world where everything is papery. While there, they meet a new friend in Mario, the hero of this world. Now they must work together with Mario and other new friends in order to stop a threat to not only this new papery world, but to other worlds as well. Inspired by Codex92's "My Little Paper Mario: The Thousand Year Door."
Is this referring to the Friendship Festival from the movie there?
I gotta say. Not a bad start to this story. I hope you'll write more chapters for it soon.
Hope this story's continuing.