D. S. Arschloch’s high school girlfriend Billie is pregnant. He trusts to luck that he’ll shoot straight and get away with it when he decides to kill her. He does. But then he meets a psychic-artist with mind-reading power, Kat O’Callahan, who sees him trying to run down her former college professor, Cosmo Grove, on his bike. Kat convinces Cosmo it was deliberate, and together the unlikely professor-psychic pair tracks D.S. into the petty-crime world of Kaposia City.
There a local mobster hires D.S. for a hit job. Using her paranormal abilities, Kat hooks up with the ghost of Billie, and they accompany D.S. during the hit to try to keep him from killing the victim. Violence ensues, blood flows, but ineptness prevails.
Kat and Cosmo then join rumpled Detective Strangler in an uneasy alliance using Kat’s extra-sensory magic and Billie’s ghostly presence to mess with D.S.’s psychopathic mind and punish him for his crimes. Meanwhile, Billie’s parents are planning revenge on D.S. with their own quietly senile versions of medieval tortures, like dismemberment and impalement.