Johnny and Scott bring Sigmund home to live in their clubhouse.

Sigmund falls in love with a canine named Fluffy. Zelda cleans the clubhouse and Slurp tries to lure Sigmund home.

Sigmund's family kidnaps Scott, so Johnny dresses up like Frankenstein to save him.

Johnny gets captured. The Wolfman makes a surprise appearance at the Ooze cave.

Sigmund decides to surprise the boys by cleaning the house, but his brothers crash in.

Zelda's obnoxious nephew Leroy stays the weekend.

Sigmund submits his song to a radio songwriting contest and wins.

Sigmund runs away because he feels like he's getting in the way. The Assistant Principal visits to discuss the boys' slipping grades.

Sigmund accidentally breaks Aunt Zelda's bowl and decides to get money from his family's cave to replace it, but he is caught after curfew by the sea monster sheriff.

Sigmund's mother Sweet Mama decides to redecorate the sea monster cave.

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

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

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

Sigmund's Uncle Siggy comes for a visit and falls for Zelda.

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

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

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