Held captive by Mrs Coulter, a dreaming Lyra finds herself in a mysterious place with someone familiar - Roger. Will continues his quest to find Lyra, meeting unexpected allies along the way.

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.

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.