In 1957, Indiana Jones and his partner George "Mac" McHale have been kidnapped from their archaeological excavating work in Mexico by Soviet agents working under Irina Spalko, who infiltrate a secret, governmental Nevada warehouse labeled "Hangar 51" and force Jones to locate a mummified corpse (from the Roswell UFO incident, 10 years earlier, on which he was forced to work). Shortly after, Mac reveals he has become a double agent on the KGB’s payroll. After an unsuccessful attempt to retrieve the body and a fight with Spalko's henchman Dovchenko, Jones escapes to a model town in the Nevada Test Site, right before an atomic bomb test. He takes shelter in a lead-lined refrigerator and is rescued, decontaminated, and interrogated by FBI agents, who suspect him of working for the Soviets. Though freed through the recommendation of General Ross, he ends up put on indefinite leave of absence from Marshall College, and the dean resigns to keep Indiana's job at the college.
