À medida que Will procura Lyra entre mundos, a Sra. Coulter testa um novo aliado improvável. Já Asriel recruta para a sua guerra contra a Autoridade.

Com o Magistério a aproximar-se da Sra. Coulter, Will tenta ajudar Lyra a ficar em segurança. A base de Asriel é abalada por visitantes inesperados.

Lyra and Will seek help from Iorek to fix the Subtle Knife before reaching an agreement to go to the Land of the Dead together. Mrs Coulter goes on trial in Asriel’s republic.

As Lyra and Will head to the Land of the Dead, Mrs Coulter tries to thwart MacPhail. Mary is buoyed by the unexpected appearance of a very unusual creature.

In the world of the mulefa, Mary makes a heartbreaking discovery. Lyra and Will journey through the Land of the Dead in search of Roger.

As Metatron's abyss rips through the worlds, sucking Dust into its depths, Lyra and Will attempt to lead the ghosts out of the Land of the Dead.

As the Clouded Mountain approaches, Mrs Coulter, Asriel and his council discuss their battle strategy. In the Land of the Dead, Lyra and Will deliberate their next move.

Lyra and Will reunite with Mary and hear a story that changes everything. Now they must decide what they are willing to sacrifice if they are to save the worlds.