Private Eye Bernard Bingbang is hired by old lady Agatha Bungworthy to find her runaway niece Cynthia, heir to the family fortune, before that fortune goes to nasty Uncle Philip. Bingbang’s only clue to the niece’s identity: she has a birthmark that looks like a butterfly right above her left nipple. Naturally, in true Nudie-Cutie fashion, “The Case of the Hidden Butterfly Birthmark” means our hero will have to see numerous naked breasts in order to find the missing heiress.

Two mob money couriers, Frankie and Tony, have their latest package of $1 million stolen by two con women, Dana and Marcia, in which the men must find the women to recover the money before they become marked men.

A deranged stablehand kidnaps the wife of a ranch owner to avenge the rape of his sister.

Frank and Roger and their wives take off for Colorado in a recreational vehicle, looking forward to some skiing and dirt biking. While camping en route, they witness a Satanic ritual sacrifice, but the local sheriff finds no evidence to support their claims and urges them to continue on their vacation. On the way, however, they find themselves repeatedly attacked by cult members, and they take measures to defend themselves.