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Inspired by "Cabin in the Woods" and the SCP Foundation, several Legionnaires find themselves pulled into another dimension, in a facility that studies and imprisons oddities. Fiction in this world corresponds to the Legionnaires' lives by coincidence, and the Facility used an experimental device to summon them from a universe where they were real people. However, instead of telling the truth, the Facility lies to them and tells them they're tulpas based on fictional characters and that their entire lives are a lie. The Facility intends to imprison them for the rest of their lives.

The Facility also monitors the slumber of several ancient elder gods, the Old Ones, who must be pacified by a yearly sacrifice of several teenagers. After the teens are tricked into a trip to a cabin in the woods, and some of the Facility's collected monsters are released to kill them, the Legionnaires must escape the Facility and fight to save the teens and their world from the Facility and the Old Ones.