Beverly Hills couple Barbara and Dave Whiteman find their lives altered by the arrival of a vagrant who tries to drown himself in their swimming pool.

Life imitates art when two Manhattanites — pompous teacher Willie and quiet photographer Phil — become friends after a thought-provoking screening of "Jules et Jim," Truffaut's classic film about a decades-long ménage à trois. Soon, the men meet Jeanette, a sexually liberated southern transplant who promptly falls for both of them. Frustrated passions curdle into jealousy as Jeanette entertains love affairs with each in the ensuing years.

Lawyer Stephen Blume, specialized in divorces, lives a paradoxical situation when, having his own marriage break up, is still in love with his ex-wife.

After returning to Los Angeles from a group therapy session, documentary filmmaker Bob Sanders and his wife, Carol, find themselves becoming vigilante couples counselors, offering unsolicited advice to their best friends, Ted and Alice Henderson. Not wanting to be rude, the Hendersons play along, but some latent sexual tension among the four soon comes bubbling to the surface, and long-buried desires don't stay buried for long.