خلاصه داستان : وین شالینزکی، مخترع عجیب و غریب، بار دیگر به گذشته بازگشته است، اما این بار تصمیم می گیرد که برای بار اخر از ماشین کوچکش استفاده کند ...

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.