1982, the British task force sails to liberate the Falkland Islands. Aboard: SAS D Squadron, determined to make their mark.
No one more so than Mark 'Splash' Aston.
But they have barely seen action when their Sea King helicopter crashes in freezing South Atlantic waters, killing 22 of Mark's comrades.

The last out of the sinking wreck, he suffers a broken neck. But defying medical evacuation orders, Mark sneaks off ship, re-joins his SAS comrades to land on a mountain near Port Stanley - to defend it against days of attacks by Argentine special forces . . .