Disguised Barsoomian soldier of fortune, John Carter ventures forth to break the power of the Assassins guild of Zodanga, who kidnap his beloved Princess, Dejah Thoris to Thuria, Barsoom's nearer moon! Pursuing her through the void to a world of verdant forests, pursued by ferocious cat-men, John Carter must reach his love or die trying.....Injured in a mid-air collision, Dejah Thoris, Princess of Helium, lies dying . John Carter vows to find Ras Thavas, the Master Mind of Mars, the one man who's skill is enough to save her. Accompanying Carter is Vor Daj, a padwar in the Warlords Guard. Together they discover that Ras Thavas is not hiding but is instead a prisoner, kept hostage by a horror of his own creations....