Sam, Dean and Castiel are transported into the animated world of Scooby Doo; they join forces with the Scooby gang to solve a ghostly mystery.

Alexandra, descended from an Illuminati member, leads a measured way of life until she meets Roger, from this moment begins to happen supernatural things. The boy turns out to be the son of the Devil himself. Now our heroes have to understand their pedigrees and save the world from the Apocalypse.