James West travels to a museum to meet Johnson for the search of Montezuma's lost treasures. Along the way to the Aztec location, they meet Artemus Gordon, disguised as a desert rat, who is hired as a digger. The expedition discovers an Aztec temple and they are immediately surrounded by Aztec warriors. One of the explorers kills two of the warriors and a chief decides that two of the explorers must be killed in retaliation. It is decided that West and Gordon will be sacrificed!