Mrs. Whatsit tessers them to Orion's Belt where they meet The Happy Medium who shows them her crystal ball which shows a vision of Earth engulfed in darkness. She explains to the children that they will have to defeat it and gives them encouragement.
On Camazotz the children arrive feeling confident that they can beat the black thing. Mrs. WhatsIt, Mrs. Who, and Mrs. Which leave the children alone on the planet ready to fight the battle.
On the planet Camazotz, the kids find a building called Central Intelligence where the source of darkness is coming from. They soon to meet the man with the red eyes who speaks in their minds and hypnotizes Charles Wallace and controls him.