One of the world's foremost authorities on structural security agrees to take on one last job: breaking out of an ultra-secret, high-tech facility called "The Tomb.” Deceived and wrongly imprisoned, Ray Breslin (Sylvester Stallone) must recruit fellow inmate Emil Rottmayer (Arnold Schwarzenegger) to help devise a daring, nearly impossible plan to escape from the most protected and fortified prison ever built.