A museum is hosting an exhibit of supernatural artefacts in honour of the Ghoul Getters' new film. Unfortunately, Gilley - engaged with wedding plans - donated a dagger which keeps the demon Oruc locked in the lower realm. Before M.J. can recover the bewitched blade, there is a murder and a heist at the museum and the dagger is stolen. Now Oruc and other formerly vanquished demons are suddenly causing mayhem. The Ghoul Getters are in for a devil of a time, rounding them up before these paranormal party crashers turn Gilley's wedding bells to funeral knells.