Nine-year-old Felicity is a spirited girl growing up in Virginia just before the American Revolution. She knows she's supposed to stay quietly indoors doing girly things, but she yearns for the freedom of the outdoors and for the adventure of riding horses.

Professor Brainard (Williams) discovers a miraculous elastic goo - Flubber - that when aplied to anything makes it bounce super high and fast. Will this 'goo' enable the professor to re-win his fiance and save his financially strapped college?