Professor Ned Brainard's discovery of flubber hasn't quite brought him - or his college - the riches he thought. The Pentagon has declared his discovery to be top secret and the IRS has slapped him with a huge tax bill, even if he has yet to receive a cent. He thinks he may have found the solution in the form of flubbergas, which can change the weather. It also helps Medfield College's football team to win a game. But it also has one unfortunate side effect: it shatters glass, which eventually places Brainard on the lam. At home, his wife Betsy is jealous of the attention lavished on him by an old high school girlfriend.