From the back of their inconspicuous light-blue van, voluptuous, foxy DJ "Dirty" Sally McGuire and her trustworthy engineer Toby preach love three times a day with sexy music from KLUV, Sally's private pirate radio station. Determined to raise enough money for her sister's kidney operation, Sally broadcasts her erotic escapades from Monday to Friday, but staying on the air is a constant struggle because the police are always trying to put her out of business. She has always managed to stay one step ahead of them, although they stick awfully close, but Sgt. Dimwittle is determined to shut KLUV down for good. Will he succeed?