When a spirit board found on a beach summons a ghostly prehistoric predator, a group of unsuspecting victims is plunged into a battle between our world and the "Mystic Realm." As the spectral shark's power grows to kaiju-sized proportions, an occult specialist must navigate hellish dimensions and confront ancient sorcery to prevent the phantom beast from consuming reality itself, leaving the gate between worlds precariously ajar for whatever nightmare emerges next.