Michael and Norman's amazing sock-eating plants have been chosen for the Space Program. Stanley's duty is to pick up trash in the shuttle while Fluffy helps out with lab experiments on Earth. In the meanwhile, the boys' whole school gets involved in the mission- building a mock spaceship, trying space food...and counting down to blastoff! And who would believe those crazy sock-eaters would return home with some brand-new tricks!

Vacation has arrived just in time to give Michael and Norman a chance to save their beloved sock-eating plants. The boys' parents have called for an end to the sock-eaters-and they haven't even learned that the troublemakers have started sprouting pods.

Michael and Norman play detective with the help of their giant sock-eating pet plants, Stanley and Fluffy. On a dark and stormy night during a blackout, the book Michael is reading, "The Curse of the Evil Ooze," disappears from right under his nose. Then a valuable plant is stolen. They discover a mysterious footprint outside their window. With their plants and themselves in danger, the boys solve all the mysteries in this laugh-loaded adventure.

Michael and Norman's school is studying space flight, practicing countdowns, trying space food, and running their own missions. The boys' giant sock-eating pet plants, Stanley and Fluffy, are chosen as last-minute replacements for a plant experiment on the real Space Shuttle, and Stanley goes on the flight, keeping the astronauts in an uproar with his antics.

A movie company comes to Michael and Norman's town to make "The Revenge of the Swamp Monster" with superstar Arnold Snickersnacker. The director needs some extra plants to make the swamp scenes look creepier, and the boys' giant sock eating plants, Stanley and Fluffy, get the parts. Norman and his friend Bob make their own hilarious video monster movie starring themselves.