: The original movie was based on A Princess of Mars . If a sequel were ever produced, it would likely adapt the second book in Edgar Rice Burroughs’ series, The Gods of Mars . Plot Speculation (Based on Fan Concepts)
: Carter would return to Mars (Barsoom) after a decade on Earth. The Abducted Child john carter 2 filmyzilla exclusive
Everything We Know About John Carter 2 & 3's Canceled Story Plans : The original movie was based on A Princess of Mars