On the evening of March 19, 1942, an Allied aircraft carrying a covert operative known as the Believer arrived over Rangoon Airport, only to discover upon landing that the airfield had already fallen into Japanese hands. The aircraft immediately attempted to take off again, but the following day the highest authorities received an AAAA-level telegram reporting that the plane had been shot down, triggering widespread panic. The Believer's mission was to deliver an ultra-top-secret operational plan and encrypted contact codes to the supreme command of the China Theater. The authorities ordered military intelligence to locate the missing aircraft and the Believer at all costs. Carried by the Believer were the complete details of the operation, including the communication codes linking the Pacific aircraft carrier task force and the bomber squadrons assigned to carry out the strike. Should these documents fall into Japanese hands, not only would the plan to bomb Tokyo collapse, but the entire escort fleet would be left like lambs to the slaughter. Wounded, the Believer parachuted into the sea and landed on Sanzao Island, home to a Japanese Navy Sixth Air Base. There, the operative was rescued and hidden by local islanders.