At the height of WWII, five idealistic young Americans receive a mysterious letter from the OSS, asking them if they are willing to fight for their country. The men and women from very different backgrounds. They are a Texan athlete with German roots, an upper-crust son of a French mother and a wealthy businessman, a dirt-poor Midwestern fly fisherman, an orphaned fashion designer, and a ravishingly beautiful female fencer from Princeton. They all answer the call of duty, but each for a secret reason of his or her own. They bond immediately, in a group, and soon after their training, they are dropped behind enemy lines and take up their false identities.