An essential range operation turns into a potentially lethal situation. Tensions rise as Colonel Graham's methods worry his team. The Spartan Brigade, 10th Mountain Division and the Afghan Army wrest Afghanistan's deadliest valley from the Taliban.

Coalition Forces assist the Afghan National Army as they tackle a Taliban stronghold in the Tangi Valley. Task Force White Devil sets its sights on a high mountain border crossing and sets its drones on a motorcycle carrying deadly cargo.

The White Devils hunt Taliban leader "Arctic Fox," but the Fox strikes first. In Kabul, a massive explosion rocks the streets in an attempt to assassinate a presidential candidate in the upcoming election.