At the “crossroads of worlds” in the mysterious city of Lyra’s Chitta-gazze, Will meets his peer from our real world. The two boys set out on a journey through strange, enigmatic worlds inhabited by incomprehensible creatures. Here they are waiting for dangerous adventures, ghosts that devour adults’ souls and do not touch children, witches and angels. By the will of fate, they come across a mysterious knife: its magic steel lets its keeper cut windows into other worlds and grants him wondrous protection from any danger.