Nicknamed the "Stinkers" by the snooty headmaster (Wong) of the private school where they are on summer enrichment scholarships, five feisty kids wreak havoc and humor with their irrepressible sense of adventure and ingenuity. They band together to build a flying machine powered by a leaf blower, escape from the comic villain in their homemade hotrod-bathtub-bikeplane, and even pull off the daring "rescue" of a contented sea lion in a misguided effort to free Slappy!