A caveman and his pet dinosaur move into the Ooze's cave and force them out.

Sigmund refuses to sing with his sea monster family in a monster rock concert because he has entered a radio contest looking for new singers!

When Sigmund's brothers find an Ooze brother must attend Ghoul school they try to trick Sigmund into going.

When Sweet Mama kicks Big Daddy out of the cave, he moves into the club house with Sigmund.

Sigmund falls in love with a canine named Fluffy. Meanwhile Zelda decides to clean the clubhouse and Slurp dresses up like a female movie star to try to lure Sigmund home.

Sigmund gets amnesia and thinks he's a human boy.

Sigmund discovers the joys of trick or treating. Meanwhile the Ooze family learns that Sigmund has won a TV contest.

Jack Wild spends the weekend with the boys. Meanwhile, Prince runs away from home.

Sigmund's family evacuates the cave for a storm and Sigmund moves home to avoid Johnny and Scott's parents.

Sheldon makes Johnny and Scott invisible so they can avoid Zelda's niece, but the genie soon falls ill and can't seem to undo his spell. Meanwhile, Big Daddy runs for mayor of the monsters.