April, 1975: Two years after the United States pulled its last ground combat troops out of South Vietnam; the ARVN (South Vietnamese Army) is waging a final, desperate fight in a war it cannot win. As the North Vietnamese Army smashes its way toward Saigon, a skeleton crew of American officers are faced with the evacuation of all remaining American and Vietnamese personnel associated with the now-abandoned U.S. war effort. Among the Americans assisting in the effort are some of the Navy's most dedicated warriors. Search and Rescue (SAR) pilot Lt. Tim Boyle, renowned for his bravery, is called back in-country to help coordinate the "helo" end of the operation. His best friend, A-7 Corsair pilot Mike Santy, is assigned as an air wing representative to the evacuation team. Years before, Boyle and Santy had faced a harrowing escape on the ground in North Vietnam after a failed SAR. Now, they're flying one last mission. Lt. Kevin Thompson and junior officer Mark Dalton, Navy SEALs working alongside Boyle and Santy, set out through the NVA-infested jungle to search for Tony Butler. A SEAL who, for the last seven years, has been leading an army of Montagnard tribesmen in their fight against the North Vietnamese, Butler is ready to come home. As the NVA closes in on the doomed city of Saigon, Thompson and Dalton must use all their stealth and cunning to locate Butler - and avoid certain death at enemy hands. In an extraordinary act of daring, Boyle and Santy commandeer an Air America "Huey" on an adrenaline-pumping SAR to try to evacuate the stranded team before the final collapse.