In The Lighthouse War, Jamie and Ramsay return to the planet Altair. In order to do so, however, they need to convince Ramsay's older brother to help them recharge the Salmon used to travel between worlds. With his help, they break into a power plant and recharge it. Brian, Ramsay's brother, then orders that he goes first. He comes back to say that men in hoods and a lady attacked him. Then, Jamie's mother grabs on the second time, having come up into the lighthouse. She and Brian are captured, while Ramsay and Jamie get away. They travel back and land on the Sacred Isle, where Alkhavan soldiers are attempting to take down the lighthouse. However, the Oraland soldiers, lead by Lorca, drive them off. It is then that Jamie discovers that, after the year of his absence, Wishaway had married Lorca. Ksar has by then become the leader of Alkhava, with his sister the Witch Queen. Lorca convinces his grandfather to lend him ships and soldiers to help rescue Jamie's family from the Witch Queen. Ksar knows of his attempt, and plans an ambush. During this time, Jamie has tried, unsuccessfully, to talk to Wishaway. She is angry that he continues to talk about her marriage. When they arrive in Balanmanik, the Witch Queen's home city with the glacier to the north, the Witch Queen herself meets them. Brian and Anna, Jamie's mother, are brought out. Jamie and Lorca take them and are about to ride off when the entire Alkhavan army attacks. Once the battle is lost, Brian, Anna, Jamie, Ramsay, Wishaway, and Lorca run off on top of the glacier to escape. The Alkhavans then pursue them. After several days, they reach a spot where the ice thins. After a few hours, the ice has faded and it is much warmer. The Alkhavans are getting close. Finally, the group reaches what the Alkhavans call the Tomb of the Ice Gods. Those members of the group from Earth, however, realize it's a space ship. After opening it with the Salmon, Brian and Ramsay work on opening it. The others gather berries to eat and snow to melt and drink. However, once they figure out how to work it, Lorca decides not to go to Earth. Wishaway, however, refuses to surrender to the Alkhavans. Lorca leaves and tells the Alkhavans everything he knows. They attack while Jamie and Wishaway are gathering berries. Ksar attacks Jamie and Wishaway, who manage to stop him. Lorca, meanwhile, realizes what he had done and attacked and killed the Witch Queen, himself dying in the process. Jamie and the others escape to Earth, but Ksar sneaks on and hides in the ceiling. When he attacks them, they overpower him and Ksar dies. On Earth, they crash land the ship off the Scottish coast and are picked up by a radio station barge. No one knows that they came on a spaceship, having been told it was a light aircraft.