Over the course of a decade, a young woman becomes increasingly dysfunctional due to undiagnosed mental illness, or perhaps to drugs, while her more stable friend sometimes tries to help, sometimes backs away to preserve herself.

Out of Nick Huxley's past comes Theresa, a social disease who sleeps with anything that moves and who has decided that she wants Nick back. Nick, a successful photographer with a stable relationship, is determined to banish Theres...