It's spring vacation. So many places to see...But Hilda wants the gang to go on an Adventure Tour in the Netherworld. They leave just in time because Tim the Witchsmeller is back and wants revenge. Tim discovers where they went and is on their tail. The vacation is teaching the family to cooperate, something they have a hard time doing. They're going to need to pull together because Tim has a new morphing machine and he uses it to turn each member of the family against one another. The Spellman's learn teamwork and band together to reverse the effects and destroy Tim.
—Anonymous