After a major confrontation between Jeff the Killer, Eyeless Jack, Sally, and Ben, Slenderman's dark side resurfaces, and he orders his fellow proxies to collect all the other Creepy Pastas.
But not all the proxies obey.
Some are turned into nothing, some are imprisoned, like Masky and Hoodie, while others are exiled, such as Ticci-Toby.
While Jeff, Jack, Sally, Ben, and Ticci-Toby are chosen to fight to the death in an arena against other Creepy Pastas, Masky and Hoodie must free their friends and stop Slenderman from conquering the land of Creepy Pasta.