An MH-47G Chinook helicopter departs formation in the Iraqi night. The mission is unauthorized. The objective is reckless. But to save a friend, Sam Avery and his crew of Night Stalkers have prepared for one last flight. ISIS operatives in Tal Afar, Iraq, have captured American aid worker Henry Stillmont. Avery knows Stillmont as "the Guru", the West Point squad leader who taught him about brotherhood, loyalty, and when to break the rules as a young cadet 25 years ago. Sam will risk his career and his life to save him.