This film is based on a true story, telling the story of a US special forces squad being sent to the mountains of Afghanistan to perform a mission after the 9/11 incident in 2001. Thor plays the captain of the "Green Beret Squadron", who has to leave his wife Elsa to perform the mission, and takes a 12-man squad to Afghanistan, and persuades the generals of the Northern Alliance to jointly deal with the Taliban and al-Qaeda. In order to match the terrain of Afghanistan and the enemy attack strategy, the special forces ride horses to become cavalry, chasing the enemy in the dangerous mountains, and a series of fierce battles of life and death are about to break out.