Kaol, on the opposite side of the planet from Helium, their jeddak Kulan Tith has not yet abandoned the old religion, and accepted Matai Shang's request for safe haven. Carter rescues the jeddak's forces from an ambush, and is admitted to Kaol, as a neighboring jeddak and good friend of his comes for a visit with his huge retinue. Matai Shang and Thurid unmask Carter's disguise and denounce his heresies, but the visiting jeddak, Thuvan Dihn of Ptarth, who is Thuvia's father, hotly defends Carter. Kulan Tith orders Matai Shang to deliver Dejah Thoris and Thuvia, but instead, he and Thurid take the women and flee to the north. After this treachery against his friend, Kulan Tith finally abjures the old religion and offers whatever help he can to Carter and Thuvan Dihn, but little can be done at this point. Thereafter John Carter follows them untiringly into the north polar regions where he discovers more fantastic creatures and the nearly forgotten Yellow Martians, who live on the north polar cap behind a ring-shaped ice barrier. After traversing through the Carrion Caves which cross the barrier, Carter and Thuvan Dihn encounter Talu, the rebellious nephew of the tyrant Salensus Oll, who rules the yellow Martians' realm of Okar from the city of Kadabra. Talu provides Carter and Thuvan Dihn with advice and assistance, including disguising the two as yellow Martians. They infiltrate Salensus Oll's court, but Thurid and Matai Shang discover Carter, and have him thrown into a pit. Carter escapes thanks to help from one of Talu's moles in the court. Carter rescues Tardos Mors and Mors Kajak of Helium, triggering a rebellion among the Heliumite prisoners, which turns into a full-fledged invasion after Carter deactivates the yellow Martians' magnetic tower that wrecks invading fleets so Helium's fleet can land safely, carrying a volunteer force of Green Martians headed by Tars Tarkas as well. After a tremendous battle, Salensus Oll is killed, and Thurid and Matai Shang are forced to flee. In a dramatic scene, Carter follows them onto an airship, over a chasm. First, Matai Shang is tossed overboard by Thurid and killed, then after Thurid attempts to do the same to Carter, he is knifed and thrown overboard by Phaidor. Lastly, Phaidor announces to Carter that she repents of her jealousy, and recognizes the love that Carter and Dejah Thoris have for each other, and throws herself