During World War II, thanks to his prodigious memory and his ability to decipher encrypted texts, Mike Rogan joins the Intelligence Section of the American Army, shortly after marrying Christine. Following the landing of American troops in France, Rogan is sent to Europe on a mission of deciphering messages. But by mistake, he falls along with Christine in the hands of the Gestapo to break into the Palace of Justice in Munich, where they will be subjected to extreme violence. Trying to save suffering to his wife, Rogan reveals the keys to American codes. Still, seven butchers, after announcing the death of Christine, shot Rogan in the head. However, hours later, Rogan is found alive. After numerous operations, he tells Bailey, an FBI agent, the story of his execution and his plans for revenge: to find and kill those responsible for his misfortune. Ten years later, in 1955, Rogan will begin his hunt.