After returning from a rough mission, Gen. Savage reacts harshly (possibly on purpose) to a pilot that has cracked under the pressure. Lt. Kerr, a conniving opportunist looking for a way out of the fighting, sees his chance and concocts a scheme to methodically convince his fellow crew members that Savage is also cracking up. As co-pilot, that would leave Kerr free to take control of the Picadilly Lily and fly her to neutral territory, effectively taking them out of the war.