In desperate need of money and work, Brooklyn detective McCoy (Burt Reynolds) is so destitute that he he's been forced to use a pool table for a bed. When McCoy is offered $10,000 by the rich and eccentric Hume (Ron Weyand) to recover some stolen diamonds, his pal Springy (Larry Block), a character with a computer-like mind for sports trivia, helps unearth some important clues. As Bolton (Beeson Carroll), a health club bouncer, leads McCoy to Felix (Alex Wilson), president of an export company, gourmet-syndicate head Dottore (Georgio Tozzi) provides further information. When Alexis (Dyan Cannon), hires him to investigate her brother, McCoy uncovers a hidden arsenal. Although beaten and pursued by thugs, McCoy takes comfort in an affair with Alexis. After Springy is murdered, McCoy learns that Lt. Col. Hardcore (John Ryan) is involved in a scheme to sell army surplus tanks and guns on the black market. And when Hardcore is assassinated and Felix killed by one of Dottore's men, McCoy finds that all the evidence points to the fact that Hume is after a prize much bigger than just diamonds.