Wayne creates the Szalinski Scan-O-Caster a machine that scans text, converts the narrative into tangible holograms, and projects the stories as 3-D images. Accidentally a book falls on the machine, turns it on and makes all the Urban legends come to life. Meanwhile there's a new kid at Nick's school, David Foaf...

Nick is upset because he is having trouble playing baseball so he asks his dad to make some inventions to help him play baseball better. Elsewhere, Diane is worried her recital and Amy uses a cream that camouflage pimples but she uses too much and it hides her nose.

He's invented a machine that will make old people feel and act younger. However, it takes Diane and Wayne's youth, giving it to an older couple; the effects take a long time to kick in. As the other couple grows young and immature, Wayne and Diane grow old and scared for their lives. Can Nick and Amy find the old couple and bring them back before Wayne dies of old age and can't reverse the process?