Chapter 1: Departure
* The Murry family is introduced: Meg (13), Charles Wallace (5), and their parents, Mr. and Mrs. Murry, who are scientists.
* Meg is insecure and bullied, while Charles Wallace is highly intelligent despite his young age.
* The Murry parents disappear under mysterious circumstances.
Chapter 2: Sending a Message
* Mrs. Whatsit, Mrs. Who, and Mrs. Which, three celestial beings, visit Meg and Charles Wallace.
* They reveal that Meg's father is being held captive and that time has become unraveled.
* The beings give Meg a magical "tesseract" that allows them to travel through time and space.
Example: Meg's insecurity is evident when Mrs. Whatsit says, "Meg, my dear, you're a much stronger person than you realize. You just don't know it yet."
Chapter 3: Central Intelligence
* Meg, Charles Wallace, and Calvin O'Keefe, a friend they recruited, use the tesseract to visit a planet called Camazotz.
* Camazotz is a totalitarian society where all thoughts and actions are controlled by a central computer.
* The children are captured and imprisoned.
Example: The totalitarian nature of Camazotz is illustrated when Calvin says, "They've got everything in here except privacy."
Chapter 4: Bunched Together
* The children escape with the help of the Happy Medium, who possesses the ability to manipulate minds.
* They travel to the planet Orion, where they meet a wise being named Aunt Beast.
* Aunt Beast teaches them the importance of love and individuality.
Example: Aunt Beast's wisdom is evident when she says, "Love is the only thing that can catch and hold a shadow."
Chapter 5: The Man with Red Eyes
* The children encounter the Man with Red Eyes, a malevolent force who seeks to control all beings.
* The Man with Red Eyes captures Charles Wallace and Meg must confront him to save her brother.
* Meg realizes the power of love and self-sacrifice, and she banishes the Man with Red Eyes.
Example: Meg's power is demonstrated when she says, "I am a star! I am a daughter of the universe! And I will not be controlled!"
Chapter 6: Uriel
* The children return to Earth, where Meg's father is reunited with his family.
* The tesseract is destroyed, and time is restored to its natural state.
* The children have learned the importance of individuality, love, and facing their fears.
Example: The enduring impact of the children's journey is evident when Meg says, "I'm glad I went on the tesseract journey, even though it was scary. It taught me so much."