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. They all take off on a fun-filled Florida family vacation in an RV. They have to take along their weird sock-eating plants, Stanley and Fluffy, because they act up and can't be left at home alone. At a campground they meet a plant scientist and her kids, who start nosing around to find out more about Stanley and Fluffy, while the plants cause more funny uproars.