Jesse moves to his biological parents' house with his girlfriend Kate and soon he hosts his friend Charlie with his girlfriend. Jesse reads old documents and decides to go to the local cemetery with Charlie to unbury his grand grand grandfather to seek out an ancient powerful Aztec skull. They reanimate Gramps that soon befriends Jesse and Charlie. But demons cross gateways in the house to retrieve the magic skull and Jesse and Charlie need to go to other dimensions to retrieve the skull and keep Gramps alive.