World War II. An impossible mission ... The fate of the Allied invasion hanging in the balance ... 12 men with nothing left to lose. Now the fate of the free world depends on a group convicted murderers, thieves and thugs - The Dirty Dozen. Twelve American military prisoners are offered parole, if they complete a suicide mission behind enemy lines just before D-Day. After weeks of grueling training, they are dressed in German uniforms, dropped deep behind enemy lines and left on their own to complete their mission and try to get out alive.