Marco is a model student and leader of a group of guys who are adrift. He hides a terrible secret: he's a champion in clandestine fights managed by a cruel trafficker.
After his village is attacked, a cowboy steals a black sphere. The mysterious object changes hands and it finally arrives to a bandit camp. The Indian girl who is carrying the sphere is captured and tied to a big cross. The cowboy confronts the bandits, in the attempt to have the sphere back, but...
