Silent documentary following the 1924 British Mount Everest Expedition during which mountaineers Andrew Irvine and George Mallory met their untimely deaths. The expedition marked the third attempt to make the first ascent of the mountain. It remains under debate whether Irvine and Mallory made it to the summit but they were last seen 800 feet from the top before they disappeared. Mallory's body was discovered in 1999 but Irvine's has never been found. The film was recorded by Captain J.B.L. Noel and captures the progress of the expedition.