Candy is an aloof heiress caught in an unhappy relationship with her brother. Jackie is a virginal intellectual who believes women are oppressed in contemporary American society. And Holly is a nymphomaniac who has come to loathe men, despite her attraction to them. Together, they join a militant feminist group, P.I.G. (Politically Involved Girls), but their newfound liberation doesn't make them any happier.

Donna and Jane are two American hippies, searching for sex and romance in Paris but, mainly, rich husbands. Eventually, Donna finds a perfume industrialist, Michael, who wishes to marry her, providing she will accept sharing his special friendship with local gigolo Max. Drama ensues as Michael changes his mind when meeting Jane, but all is well that ends well.

The movie follows Joe, a heroin addict, throughout his quest to score more drugs. The episodic plot occurs over a single day and centers on Joe's problematic relationship with his on-off, sexually frustrated girlfriend. During the course of the day, Joe overdoses in front of an upper-class couple, attempts to fool Welfare into approving his methadone treatment by having Holly fake a pregnancy, and frustrates the women in his life with his drug-induced impotence.

An aspiring actress from Kansas comes to New York and meets a host of zany characters.