Dave Purvis (William Talman) is the smartest crook there is and he's got a red-hot scheme to secure his retirement: rob an armoured car full of money, then fly off to the sun. But Dave's not as lucky as he needs to be: a cop car swings past, guns are fired and a policeman dies. The dead man's friend Lt. Jim Cordell (Charles McGraw) vows pursuit: he's smart and tough and gets results. As the heat starts to rise, paranoia kicks in and the gang turns on each other. Can Dave escape before Cordell runs him to ground?