The demons have been released and have taken over the city. They are in the library, the dump and even the water. Nat is trapped at sea and his friends must use their wits to recapture the escaped demons. The Demonkeeper Journal may hold some clues if only they can be translated in time. Richie, Sandy and Lilli are a team and need to hold on until Nat gets back. The little minions step in, but when the elements collide and the chaos escalates, the destruction could be complete.