A feature documentary retracing British explorer George Mallory's attempt to reach the summit of Mount Everest in 1924 and become the first person to conquer the world's highest peak. He was last seen alive just 800 feet below Everest's peak, before the clouds closed in and he disappeared into legend. 75 years later, renowned mountaineer Conrad Anker discovered Mallory's frozen body high in the mountain's 'death zone'. Remarkably all Mallory's belongings were found intact. The only thing missing was a photograph of his wife, Ruth, which Mallory had promised to place on the summit if he succeeded. Haunted by Mallory's story, Anker returns to Everest with British climbing prodigy Leo Houlding to unravel the mysteries surrounding his disappearance. Using the poignant and evocative letters between Mallory and his beloved Ruth, the film combines previously unseen archive photographs, specially restored film footage from 1924 and dramatisation with the present-day story of Anker and Holding's expedition.