When Charles Wallace Murry goes searching through a wrinkle in time for his lost father he finds himself on an evil planet where all life is enslaved by a huge pulsating brain known as It. How Charles his sister Meg & friend Calvin find & free his father makes this a very special & exciting mixture of fantasy & science fiction which all the way through is dominated by the funny & mysterious trio of guardian angels known as Mrs Whatsit Mrs Who & Mrs Which.