Iraq 1991, deep behind enemy lines. 8 members of Britain's Elite special operations regiment; The Special Air Service fight for their lives. The fate of the allied coalition hangs in the balance. Over the next few days, their mission will turn into a disaster. Some of the men will be killed, others will try to escape by walking 200 miles across the Iraqi desert - leaving in their wake an estimated 200 Iraqi dead and wounded. Some will endure appalling torture at the hands of their captors. Using the survivor's first hand accounts, this film reveals the details of their mission - an extraordinary test of bravery and endurance. They are the men of call-sign: Bravo Two-Zero. This is their story.