Mitch Nelson, a U.S. Army captain with Green Berets Operational Detachment Alpha (ODA) 595, is moving into a new home with his wife and daughter on September 11, 2001, after receiving an assignment to staff duty under Lieutenant Colonel Bowers. As news of the devastating terrorist attacks that day break, Nelson volunteers to lead 595 into Afghanistan. Bowers initially refuses, but veteran soldier CW5 Hal Spencer, previously scheduled to retire, persuades Bowers to give Nelson command of 595 again, as well as volunteering himself for the deployment. After leaving their families, 595 travels to Uzbekistan on October 7, 2001. After being briefed and evaluated by COL Mulholland, Commander of 5th Special Forces Group, Nelson and 595 are picked to fight alongside Northern Alliance leader Abdul Rashid Dostum.