Fact1: Geoffrey Richter-Douglas is lieutenant in British Army, Fact2: Geoffrey travels to Germany even getting shot in arm by fellow British agents to sell Germans ruse, Fact3: German Intelligence did not bring him to Germany for family reunion, Fact4: Hirsch is assigned to LZ36 on maiden test flight, Fact5: wireless operator returns and upon hearing reply and realizing what Geoffrey had done engages him in fight
Output: During the First World War in 1915, Geoffrey RichterDouglas Michael York, a Scotsman of German descent, is a lieutenant in the British Army. He meets Stephanie Alexandra Stewart, a German spy with whom he falls in love. She suggests that he escape to Germany, where the other members of his family and his friends are. As a loyal soldier, he reports this contact to his commanding officer, Captain Whitney, who also wants Geoffrey to go to Germany, but on a secret mission to steal the plans of the LZ36, a new type of Zeppelin under development at Friedrichshafen. Geoffrey pretends to be a deserter and travels to Germany, even getting shot in the arm by fellow British agents to sell the Germans the ruse. At Friedrichshafen, he meets his longtime friend Professor Altschul Marius Goring, who lives with his beautiful and much younger wife, Erika Elke Sommer, both of whom are scientists working on the new airship. Erika suspects that Geoffrey may be up to something, but keeps her suspicions to herself. Geoffrey quickly learns that German Intelligence did not bring him to Germany for a family reunion. Following a meeting with Intelligence Colonel Hirsch Anton Diffring, he is assigned to the LZ36 on its maiden test flight. As soon as it is declared airworthy, to maintain absolute secrecy without first returning to base, the airship is to take part in a military operation to steal or destroy British historical documents, including the Magna Carta, from Balcoven Castle in Scotland. Geoffrey is to play a key role in the mission, to use his knowledge of the Scottish countryside to guide the airship very close to the castle at night while the craft is in glide mode, with its engines off. After leaving Germany, the zeppelin lands on a lake in Norway to refuel and take on board a specially trained squad of soldiers. Geoffrey misdirects the crafts wireless operator just long enough to send a message about the LZ36s location to British intelligence. The wireless operator returns and, upon hearing the reply and realizing what Geoffrey had done, engages him in a fight. Geoffrey manages to knock him out, and throws him out an open window, telling the captain the wireless operator had fallen while scraping ice off the airship, as many craft personnel had been ordered to do. The explanation is believed, but Geoffrey does not have a chance to send any more information because Erika comes on the scene and removes an important radio component. The airship proceeds to Balcoven Castle. Under cover of darkness Geoffrey navigates the airship on its final approach to the castle. A local farmer hears the sound of the airships engines just before they are cut, and raises the alarm with the local military base, but he is not immediately believed. Geoffrey has no option but to participate in the assault, but manages to slip away to try to raise the alarm. He persuades a sceptical radio operator to contact London, but after being wounded by German soldiers, the dying operator mistakes Geoffrey for a German spy and shoots him in the arm. The German attack on the castle is initially successful, but the historical documents they are after are in vaults inaccessible to them. Meanwhile, alerted by the farmers report and the radio operators chaotic call, the British Admiralty scrambles several aircraft squadrons and dispatches ground troops. The British troops engage the Germans in a firefight, who withdraw emptyhanded rather than risk losing the Zeppelin. The airship manages to slip away in the dark with a much depleted crew, but shortly after first light is caught by pursuing British aircraft. Several aircraft are shot down in the ensuing dogfight, but the Zeppelin is badly damaged. Despite desperately lightening the airship in an effort to stay in the air, the survivors are forced to crashland near the coast of the neutral Netherlands. Geoffrey, Erika and the few remaining crew members make their way ashore just as the Zeppelin explodes.