During a weekend trip to Ocracoke Island, siblings Judy and Stink Moody take part in a pirate treasure-hunting game, in which various clues lead them to silver coins, or "pieces of eight," hidden across the island.

Stink and his friends try to earn money to buy the latest book in the Nightmare on Zombie Street series and go to the book release party.

Stink may be a super science freak, but even Dr. Stinkelstein is feeling freaked out about having a slime mold living and growing in his very own room. At Saturday Science Club, Stink learns that these one-celled organisms are smart enough to find their way out of mazes and gang up on food sources.