At the height of the First World War, two young British soldiers must cross enemy territory and deliver a message that will stop a deadly attack on hundreds of soldiers.

George MacKayas Lance Corporal Schofield
Dean-Charles Chapmanas Lance Corporal Blake
Mark Strongas Captain Smith
Andrew Scottas Lieutenant Leslie
Richard Maddenas Lieutenant Blake
Claire Duburcqas Lauri
Colin Firthas General Erinmore
Benedict Cumberbatchas Colonel MacKenzie
Daniel Maysas Sergeant Sanders
Adrian Scarboroughas Major Hepburn
Roger Deakins