First in series, followed by Beetle in the Anthill (original title: Zhuk v Muraveinike), and The Time Wanderers (original title: Volny Gasyat Veter).The novel is set in the 22nd century of the Noon Universe. Mankind is the prevalent race in the Galaxy, capable of interstellar travel. Human social organization is presumably Communist, and can be described as a highly technologically advanced anarchistic meritocracy.

    Now people unquestioningly accept the Tripods' power. They have no control over their thoughts or their lives.But for a brief time in each person's life—in childhood—he is not a slave. For Will, his time of freedom is about to end—unless he can escape to the White Mountains, where the possibility of freedom still exists.