The three Mrs. W's transport the children to Camazotz and instruct them to remain always in each other's company while on their quest for Mr. Murry. On Camazotz, all objects and places appear exactly alike because the whole planet must conform to the terrifying rhythmic pulsation of IT, a giant disembodied brain. Charles Wallace tries to fight IT with his exceptional intelligence but is overpowered by the evil and becomes a robot-like creature mouthing the words with which IT infuses him. Under the control of IT, Charles leads Meg and Calvin to Mr. Murry and together they confront IT. However, they, too, are unable to withstand IT's power; they escape only at the last minute, when Mr. Murry appears and seizes Meg and Calvin, "tessering" away with them (traveling via another tesseract) to a gray planet called Ixchel inhabited by tall, furry beasts who care for the travelers. Charles Wallace remains possessed by IT, a prisoner of Camazotz.