Orphan Lyra Belacqua's world is upended by her long-absent uncle's return from the North.
Lyra arrives to her new life in London, determined to find Roger with Mrs. Coulter's help.
Following her kidnapping, Lyra falls in with a new group but struggles to know who to trust.
Arriving North, Lyra seeks allies in the witches, an aeronaut and an armored bear.
The alethiometer sends Lyra and Iorek on a new path, leading to a shocking but vital clue.