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Nine and fifteen years have passed since the events of the first Book of Dust. Lyra is already twenty, she is not the same as before. Melancholic and lonely, she is still interested in everything around her and eager for adventure. When she accidentally learns about a brutal murder, she becomes involved in the intricacies of the Magisterium. Due to the events around her, the tension and uncertainty of Lyra's life adds its own adjustments and pushes the girl to make important decisions and risky actions. Enlisting the help of her closest friends, Lyra will embark on a journey of several thousand miles to the distant and ever-changing East.

From the author: «The Secret Society» — the second part of «The Book of Dust». The protagonist, Lyra Silverton, once known as Lyra Belakwa, was also the main character in the previous Dark Matter trilogy. In fact, her name is how the cycle began and ended. In this story, she was about eleven or twelve years old. In the first part of The Book of Dust, — — The Magic Savage — Lyra was a small child who was one year old. Despite the fact that she was central to the story, most of the action of this book concerned a boy named Malcolm Polstead. But events have consequences, and sometimes the consequences of what we once did take a long time to become completely undeniable. At the same time, the world moves on; power and influence shift, increase or decrease; and the problems and concerns of adults are not necessarily the same as those of their youth. Lyra and Malcolm, as I say, are no longer children.