Karl Bauer is stuck underground in a government research facility where alien little grey men are developing a new Manhattan Project. He is the only member of the Bauer family who has not experienced a rather nasty side effect of being abducted and probed by little grey men - so the researchers at the facility want to know why he hasn't experienced the "kablooie" side effect. He escapes with the help of Archibald the alien and Roberta Lazar, a guard.