Autumn 1943: An angry American press has blamed the RAF for heavy U.S. B-17 losses over Europe. To restore confidence, joint Allied operations are planned by RAF and 8th Air Force top brass. 633 Squadron, whose Rhine Maiden mission success has won them a glorious reputation, is called in to launch Operation Crucible. It is to be a Dieppe-style landing by the Americans, supported by the aces of 633 Squadron. Their hazardous role: to give ground support to troops against overwhelming firepower and totally unforeseen odds...