In September 1943 an American Flying Fortress returning from a bombing mission crashes in Wales. A farmer is first on the scene to discover that its crew of ten have all perished. When the police arrive, only nine bodies are recovered. A lifetime later a son goes looking for the father he never knew, climbing steep hillsides into deepening mysteries of time and loss. Set in America, England and Wales, Wingspan tells two intertwined stories separated by fifty years and a thousand miles of ocean - stories of pursuit and discovery, love and war, bereavement and remembering.