Lyra and Will find themselves in a strange new place. The Magisterium take action as Mrs Coulter interrogates a suspected heretic witch, and Lee Scoresby embarks on a mission.

Lyra crosses into Will's world, and they set off to find answers about Dust. Will is shocked to discover he has grandparents, but quickly realises he can’t trust them.

Lyra ignores the alethiometer, with dangerous consequences for her and Will. Lee Scoresby’s search for Grumman brings an unlikely ally, and the witches seek answers.

In search of the knife, Will and Lyra try to gain entry into the Torre Degli Angeli. Lee finds Grumman - or Jopari, as he is now known - and they take to the sky in search of the knife bearer.

Will and Lyra plan to steal the alethiometer from Boreal but are set back by an unforeseen guest. MacPhail takes decisive action, and Mary takes a leap of faith.

Lyra and Will find allies who can help them in their search for Will’s father. The Magisterium learn something shocking, and Mrs Coulter meets a formidable foe.

As all paths converge on Cittàgazze, Lee is determined to fulfil his quest, whatever the cost. Mrs Coulter’s question is answered, and Will takes on his father’s mantle.

Will tries to save Lyra from her mother and the Magisterium, but it comes at a great personal cost. Asriel’s plans change when unexpected angelic visitors crash into his republic.

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 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.