"A Princess of Mars" tells about the adventures of John Carter, a former Confederate captain, who is mysteriously transferred to Mars. On the Red planet he joins the giant Tharks, first as prisoner then as a friend, helps then Princess of Helium, the beautiful Dejah Thoris, to escape from captivity and to fight the ancient enemy, the city-state of Zodanga, to protect her kingdom. But his main task is to attempt to fix the oxygen generating station, without which all living creatures on Mars will die. Will he succeed? What adventures will John face on Mars? Read the e-book and enjoy the world of adventures, romance and one of the best books in the genre of science fiction, loved and respected by generations of readers and writers alike.