French secret agent Joss Baumont (Belmondo) has been assigned the treacherous task of killing an African president; but, in a series of drastic political changes, the mission is negated. The tables turn on Baumont, as those who assigned him turn him in to the African authorities. Sentenced to long-term imprisonment, Baumont makes a daring escape with the intention of fulfilling the Secret Service's murderous request as a reprisal and setting up a thrilling showdown.