The Addams Family visit Nashville to look for dinosaur bones but are caught up in a pop festival instead. Lurch is nervous about meeting his pen pal. He becomes a lead guitarist and vocalist for the group Freddie and The Frogs.
Uncle Fester's new invention - "Festerine" promises to fix the petrol shortage for good. The Addamses win a million dollars for their favorite course: Vulture Culture at The Ghoul School of Dracula University when they outwit Count Evil and The Race Ace.
The Addams Family make their first ocean voyage. Ali the Alligator and Ocho the Octopus are dancing and that spooks every passenger aboard. Meanwhile The crooked Lefty and Joe steal all the valuables. The Addamses pursue the crooks.
Pugsley wants a horse for his birthday. The Addams Family choose a worn-out old nag named Bones. But thanks to Granny's cooking the horse transforms into a fast runner again and is ridden by Pugsley who wins the Kentucky Derby.