After an ambush, Afghan interpreter Ahmed goes to Herculean lengths to save US Army Sergeant John Kinley's life. When Kinley learns that Ahmed and his family were not given safe passage to America as promised, he must repay his debt by returning to the war zone to retrieve them before the Taliban hunts them down.

The true story of Desmond Doss, the conscientious objector who, at the Battle of Okinawa, won the Medal of Honor for his incredible bravery and regard for his fellow soldiers. We see his upbringing and how this shaped his views, especially his religious view and anti-killing stance. We see Doss's trials and tribulations after enlisting in the US Army and trying to become a medic. Finally, we see the hell on Earth that was Hacksaw Ridge.

With many people fearing the actions of super heroes, the government decides to push for the Hero Registration Act, a law that limits a hero's actions. This results in a division in The Avengers. Iron Man stands with this Act, claiming that their actions must be kept in check otherwise cities will continue to be destroyed, but Captain America feels that saving the world is daring enough and that they cannot rely on the government to protect the world. This escalates into an all-out war between Team Iron Man (Iron Man, Black Panther, Vision, Black Widow, War Machine, and Spiderman) and Team Captain America (Captain America, Bucky Barnes, Falcon, Sharon Carter, Scarlet Witch, Hawkeye, and Ant Man) while a new villain emerges.