On this planet, the citizens have relinquished their free will to IT, a hideous pulsing brain which controls everything, even thought. Everything on Camazotz is regulated by IT's headquarters, even the play time of children. For example, to their horror, the Murry children along with their friend Calvin discover that a little boy bouncing his ball out of rhythm with the other children on the street is later "reeducated" to conform to the norm. Even Meg's little brother is seduced and then hypnotized by IT until finally her unrelenting love for him brings him back.
All of the people follow orders of Camazotz.