Set against the rolling backdrop of a century of British history from WWI to the War on Terror, this is a family portrait captured in snapshots. First there is William, the factory lad who loses his life in Gallipoli, then his son Billy, a champion cyclist who survives the D-Day Landings on a military bicycle, followed by his crippled son Will who becomes an Oxford academic in the 1960s, and finally his daughter Billie, an artist in contemporary London. Just as the names - William, Billy, Will, Billie - echo down through the family, so, too, the legacy of choices made, chances lost, and secrets kept.