Live-in lovers Neal and Rachel are overworked doctors. They rarely see each other, and their relationship suffers for it. Enter Neal's old good-for-nothing friend, Richie, for a surprise visit, straight from South America - or somewhere. He needs a place to stay and Neal is too weak to say no. Rachel doesn't want him either, but Richie manipulates her, creating a sexual tension between them. Richie immediately uses this charge to stir up trouble between the couple, insinuating that Neal is boring and that Rachel needs a good time with a black sheep like himself.