Based on a true story, this film tells the story of an American special forces team sent to the mountains of Afghanistan after 9 / 11, 2001. Brother Hammer, who plays the captain of the Green Beret team, has to leave his wife Elsa to carry out the mission, leading a 12-man team to Afghanistan and persuading Northern Alliance generals to work together against the Taliban and al-Qaeda. In order to tie in with the terrain of Afghanistan and the strategy of attacking the enemy, the special forces drove their horses into cavalry to chase the enemy in the treacherous mountains, and a series of fierce battles of life and death were about to break out.