Wylie Cooper (Dudley Moore) believes that a new super-tank he designed is a real lemon on treads. T.M. Landry (Eddie Murphy) is the Army grunt who puts Cooper's tank to the acid test during combat in Kuwait two years later. Via some choice flashbacks, Cooper works furiously to correct the design flaws before the tank is rushed into production. Question is, will he work out the kinks before Murphy gets behind the wheel?