The scientist father of a teenage girl and boy accidentally shrinks his and two other neighborhood teens to the size of insects. Now the teens must fight diminutive dangers as the father searches for them.

The joke’s on absent-minded scientist Wayne Szalinski when his troublesome invention shrinks him, his brother and their wives so effectively that their children think they’ve completely disappeared. Of course, this gives the kids free rein to do anything they want, unaware that their parents are watching every move.