In a world ravaged by violence, and other serious social problems, Joan - a character that alludes to Christ (which represents the return to Earth) arrives to Italy by train and preaching for the salvation of mankind, condemning the hypocrisy and hedonism.
It is the year 1936 and the Spanish Civil War is raging. When the German commander of an international brigade is badly wounded he gives his five comrades a message which he divides up and secretes into in five cartridges. All five shells must reach the battalion in order for the message to be relayed. But Frenchman Pierre can’t bear the heat of the Sierra. When he leaves their hide-out to drink from a well he is hit by an enemy bullet.
Concentration camp commander Kraft finds out that prisoner Kominek is a former professional boxer. Overnight, the prisoner is made Kraft's exercise partner and unwillingly rises to a privileged position at the camp. His anger over the death of his friend and co-prisoner leads to open revolt. The film brings a new view of human degradation during fascism by a tragic story of one man whose only chance for survival is to accept the rules of an unequal game.
