Based on "The Amber Spyglass," the third novel in Philip Pullman’s award-winning trilogy, the final chapter of this epic fantasy series finds Lyra (Dafne Keen), the prophesied child, and Will (Amir Wilson), the bearer of The Subtle Knife, on a journey to a dark place from which no one has ever returned. As Lyra's father’s great war against the Authority edges closer, they will learn that saving the worlds comes at a terrible price.