A small unit of U.S. soldiers, alone at the remote Combat Outpost Keating, located deep in the valley of three mountains in Afghanistan, battles to defend against an overwhelming force of Taliban fighters in a coordinated attack. The Battle of Kamdesh, as it was known, was the bloodiest American engagement of the Afghan War in 2009 and Bravo Troop 3-61 CAV became one of the most decorated units of the 19-year conflict.

A battle-scarred War on Terror bounty hunter is forced to go to London on a manhunt for a disavowed CIA operative, which leads him into a deadly running battle with a former military comrade and his private army.