Socially awkward fifth-grade genius Nate Bannister recruits his classmate Delphine to help him reverse one of his many experiments (a dinosaur-sized, invisible cat) while foiling the schemes of the world's most dastardly organization, the Red Death Tea Society.

Sixth-grade genius Nate Bannister, with his talking car Betsy and super-powered pets Bosper the Scottish terrier and Sir William the gull, teams up with his friend Delphine to stop the Red Death Tea Society from unleashing angry bees on the city of Polt.