The Demon's Rook (2012)
The story follows a young boy named Roscoe who finds a portal to another world where he is taught magic by an exiled demon elder. Confined to their mystical cave, Roscoe is raised up by the demon elder in secret. Once he is discovered by three other demons, Roscoe must escape to avoid their wrath. Through desperation, he is forced to escape through the portal that leads back to our world. Unbeknownst to Roscoe, he leads the demons to discover the portal for themselves. Once the demons pass through, a nightmarish foray of summoned monsters are unleashed. One demon possesses the minds and will of all whom she crosses, another transforms a man into a murderous beast, and the other summons an army of the dead to do his bidding.