In this sequel, Fred MacMurray reprises his Absent-Minded Professor role as Ned Brainard, inventor of Flubber. Tyrant land developer Alonzo Hawk threatens to bulldoze Medfield College if the school doesn't pay back his loan. Professor Brainard wants to help, but with the government stalling on payment for his gravity-defying Flubber invention, he can't even settle a debt with the paperboy, let alone further his own research. Brainard is experimenting in his garage laboratory on Flubber Gas, which can gather up moisture and direct it at clouds to produce rain. It's a grand invention, but can it bring back his wife who's left in a huff, thinking he's smitten with another woman? Can it score a win for Medfield's inept football team, and keep Alonzo Hawk at bay? As it turns out, Flubber Gas does a lot of things that no one -- not even Professor Brainard --expected.