resh from a ride on a . Nazi submarine, . Indiana . Jones is persuaded by a beautiful missionary to search for her missing father in . Mongolia. . Professor . Angus . Starbuck has discovered a dinosaur bone in the . Gobi . Desert. . But unlike other such discoveries, this bone isnt ancient! . As . Indy crosses from . China through a treacherous mountain pass into . Outer . Mongolia, he runs afoul of the regions fiercest warlords. . Meanwhile, the worlds last innocent people, dwelling in a . Stone . Age paradise, are poised on the brink of destruction. . Suddenly . Indiana . Jones is dueling wild dogs and bloodthirsty killers in a desperate effort to save the most historic discovery of the twentieth century: the last living triceratops!