The bodies of over 900,000 World War I soldiers were never found or identified. This documentary special embarks on a journey to discover the story behind some of these forgotten soldiers, those with no grave, who are remembered collectively as “Unknown Soldiers”. In an astonishing discovery made in 2009, 250 of these British and Australian soldiers were found in six un-marked mass graves in Fromelles, a tiny village in Northern France. This is the story of the journey to recover them, reveal their identities and give them the military burial that they never had when they fell 90 years before.