Four teenage friends — Frankie, Regan, Tom and Jack — are working together on a project for their school's archaeology club. A disused Second World War airfield near their home town in southern England is the subject of their investigation. Their research in to the history of the place and the members of the armed forces who lived and worked there in the summer of 1940 takes on another dimension when the kids are haunted by the ghost of a fighter pilot who died under mysterious circumstances.