A beautiful young European girl, Carol, is drawn through mental telepathy to the ancient lost city of Kuma, there to become the reincarnation of its lost former ruler, Ayesha, and consort of her predecessor's lover, Kallikrates. In return, Men-Hari, a member of the Magi, the ancient Chaldean race of wise men, will also be allowed to enter the sacred flame and become immortal, which will expand his already formidable mental powers to the point where he will be able to take over the entire world. To achieve this, however, he must bring Carol to Kallikrates before the sacred flame is ignited during a once-in-a-lifetime astronomical alignment. Men-Hari therefore uses his powers ruthlessly to compel Carol to come to Kuma.