Sigmund's family is invited to uncle Siggy's luau but only if Sigmund is there. But when his brothers try to get him Sigmund he hits his head and thinks he is a little boy.
Jack Wild, the movie star is vacationing on the beach and meet Sigmund and the boys. Sigmund's family take Mr. Wild prisoner, but if you think he'll stand for that…You don't know Jack!
A caveman and his pet dinosaur move into the Ooze's cave and force them out.
When Uncle Siggy finds Sigmund is not at the cave he locates him at the clubhouse - and falls in love with Zelda.
It's Halloween and Sigmund decides to go trick or treating with Johnny and Scott. So Siggy disguises himself as a boy in a sea monster costume.
Sigmund's family evacuates the cave for a storm and Sigmund moves home to avoid Johnny and Scott's parents.
When Sweet Mama kicks Big Daddy out of the cave, he moves into the club house with Sigmund.
Sigmund's mother Sweet Mama decides to redecorate the sea monster cave. But to save money she gets her furniture from Johnny and Scott's house.
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.
When Sigmund’s brothers find an Ooze brother must attend Ghoul school they try to trick Sigmund into going. Then the boys neglect their schoolwork looking for their sea monster.
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!
A Sea Monster tax audit reveals Sigmund is missing. Sigmund’s father, facing more taxes sends Sigmund’s brothers off to retrieve their little tax deduction. Meanwhile the housekeeper brings her nephew to visit Scott and Johnny.
Zelda the housekeeper plans a birthday party for her friend Sheriff Bevins and depends on the boys to clean the house. But things go wrong when Sigmund cleans the house instead.
When Sigmund gets sick Scott & Johnny find a doctor at the aquarium. But when they realize he only wants him for research they have to cure their sea monster friend themselves.
Sigmund’s brothers are frustrated by the fact they cannot recapture Sigmund. Instead they decide to kidnap Scott to do Sigmund’s chores. Johnny and Sigmund attempt to rescue him with the help of…Frankenstein???
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