Nancy, the titular sex-worker with an unshakeably optimistic attitude, finds herself running out of fuel while on her way to the Big City. Now, with the help of her best friend and crack-fiend Susie the Drug Addict, she must not only procure the gas to make her car go again, but help defeat an armed robbery, a disillusioned amateur hippie and “the Prophets” to help uncover the evil lurking within the perfidious petrol station.