Mackenna's Gold is based on the novel of the same name by Heck Allen using the pen name Will Henry. An old Indian chief, Prairie Dog (Eduardo Ciannelli) gets killed by a U.S. Marshal, Mackenna (Gregory Peck) in a shootout. Before his death, the old Indian chief gives a map to Mackenna that will lead to the Canyon gold. Instead of believing in Pierre Dog's map, Mackenna burns the map after having a look on it. Later, Mackenna gets captive by a Mexican outlaw, Colorado (Omar Sharif), who along with his gang, is also in search of the Canyon gold. Colorado forces Mackenna to come along with him as he knows that Mackenna must have memorized the directions before burning the map. On the adventurous journey, some more people, who are going crazy for the gold, join the group, but soon conflicts start rising amongst them. The way to Canyon becomes scarcer as the group first gets pursued by the cavalry and then by the Apaches, who are guarding the gold for years. Watch this adventurous movie to find out whether these people, who are infected with "gold fever", be able to get their remedy, the gold?