August 1942: Captain Robert Bolt and his men are on a secret mission in occupied France. The commandos, led by the formidable Sergeant Sam Butcher, have a straight forward job - or so it seemed. Betrayed and on the run, they are left with no option but to fight for their lives.

December 1941: Britain is desperate to crack Germany’s naval codes. Lieutenant Robert Bolt and his commandos, led by the tough and uncompromising Corporal Sam Butcher, are sent to Nazi occupied Norway to carry out an intelligence pinch.