In this war drama set during the Korean War, a grizzled GI must undertake a potentially suicidal mission. He decides not to waste his best soldiers and instead chooses from amongst his very worst. He then attempts to train them. His methods are harsh, and his men hate him. Secretly, they conspire to kill him and go AWOL as soon as possible. However, as soon as they cross enemy lines, they meet an injured American nun and her schoolgirls at the place they must blow up. Their hated, but experienced leader manages to help them all out of a potentially horrific situation thereby winning the respect of both the men and the young girls. The men become loyal to him. Only one remains rebellious. He attempts to rape one of the girls. Because the nun's injured leg grows worse, he allows the girls to take her to safety. He and his men then go on to succeed in their endeavors and they all become heroes.