An eccentric inventor creates a lighter-than-air substance and uses it to make his car fly, attracting the attention of an unscrupulous spy ring. Disney fantasy comedy, starring Fred MacMurray, Tommy Kirk and Nancy Olson.

Bumbling professor Ned Brainard accidentally invents flying rubber, or "Flubber", an incredible material that gains energy every time it strikes a hard surface. It allows for the invention of shoes that can allow jumps of amazing heights and enables a modified Model-T to fly. Unfortunately, no one is interested in the material except for Alonzo Hawk, a corrupt businessman who wants to steal the material for himself.