Answer:
Meg's father has disappeared.
Meg, Charles Wallace, and Calvin seek the home of the Thing.
Step-by-step explanation:
Meg's father has disappearing is a main event because she has a hard time fitting in at school, and her and her siblings have it hard.
During their time on Camazotz, the three children first receive instructions and warnings from Mrs. Whatsit, Mrs. Who, and Mrs. Which. Specifically, they tell Meg that her faults will be her greatest strengths. Conversely, Charles Wallace's gift will become his strongest temptation. Calvin must use his communication skills wisely, and the children must remain together.