From 1982 to 1986, an enterprising college student financed his education by selling over 600 sperm 'donations' to fertility clinics up and down the eastern seaboard. Twenty years later, Walt Callisto, who grew up as an only child on a rutabaga farm in upstate New York, suddenly discovers that he has 376 brothers and sisters. His search for his sperm daddy turns up a shady thoroughbred horse owner who stores frozen horse semen in his garage, traffics in hot boat motors, and maintains his Lincoln town car with parts appropriated from rental cars. Then Walt's life begins to get a little strange...