A man manages to make an exact duplicate of himself. The double is alike in every way, except he succeeds in all things the man tries to achieve but fails at miserably. Jacob (Pierre Clementi) watches as his double seduces women, dominates opponents and wins at everything he tries to do. The two clash over politics, art, morality and women (Stefania Sandrelli and Tina Aumont). The question is raised if change is good for the development of humankind, why are revolutions so bloody?