The ponies are at a sleepover and Pinkie Pie finds a package on her doorstep. She opens it up, it included strange items (letter, game console, and a game). The note tells of the "Tails Doll". Twilight laughs it off and insists on playing the game. Pinkie and Twilight play the game and decide to go to sleep. The 6 are woken by some weird sounds, Twilight goes to check it out and the ponies find themself in some game world... a horrific version of it that is. Read as the ponies delve into the world of the Sonic R game.
Unlike my last story, this is going to be Grimdark, horror and slightly tragic.