John Carter finds himself surrounded by hideous plant men and the carnivorous white apes, where he meets up with his old friend Tars Tarkas, the Jeddak of Thark. They soon realize they are in the Valley Dor, where the incomparable Dejah Thoris is believed to be dead. Pursued by the Holy Therns, John Carter must seek a way to free his Princess Dejah Thoris and her companion Thuvia, trapped with the vengeful Phaidor, leader of the Holy Therns