Indiana Jones travels through time to collect the shards of the Diamond of Zeus before the evil Nazi scientist Dr. Heindstein. He finds the 12 shards at significant historical locations throughout the Coachella Valley, including the McCallum Theater, Gerald Ford's Boys and Girls Club, Eisenhower Memorial Hospital, and Coachella Valley High School. After assembling the diamond, Indiana hides it in time to prevent the Nazis from gaining its unlimited power.