Mrs. Whatsit, Mrs. Who, and Mrs. Which arrive in the land of the beasts.
Meg runs up to embrace Mrs. Whatsit, but is waved off, as the trio isn't quite materialized enough for hugging.
Meg thinks the starry trio is here to save the day, but Mrs. Whatsit coldly says that they can do nothing on Camazotz.
Mr. Murry and Calvin both offer to go back to Camazotz, but Mrs. Whatsit tells them that's crazy talk.
Meg finally figures out that she's the one who has to go: she's closer to Charles Wallace than anyone.
Mr. Murry and Calvin insist they won't let Meg go alone, but Meg and the star triplets barely notice their protests.
Aunt Beast offers to go too, wanting Meg to know she would even though she knows her offer will be refused.
Mrs. Whatsit says that the Happy Medium doesn't believe that Meg will die on Camazotz.
Calvin asks if she knows what's going to happen, and Mrs. Whatsit says no, not in situations like this.
Mrs. Whatsit explains that knowing one's fate would be like living on Camazotz, without free will. She compares life a sonnet (a form of poetry): there's a set form, but what you say is up to you.
Meg makes tender goodbyes with Aunt Beast, Calvin, and her father.
The three stars give Meg their going-away presents: Mrs. Whatsit gives her love, Mrs. Who gives a speech about God, and Mrs. Which, once Meg arrives on Camazotz, gives her the knowledge that she has something IT doesn't have.
Meg sets off down the hill and towards IT, through the eerily empty streets, trying to figure out what Mrs. Which meant.
Meg arrives, enters, gets acclimated to the enforced biological rhythm of IT, and sees Chucky chillin' with the giant brain.
Chucky tells her that there isn't anything she has that IT doesn't have, and that Mrs. Whatsit betrayed her by sending her to IT.
Meg believes this for only a moment, but then shouts out that he's lying.
Meg starts hating Chucky, and the hate is almost her undoing, until she realizes it and resists.
Chucky says that Mrs. Whatsit hates Meg, and that's when Meg gets it: she can love, but IT can't.
Meg starts loving Charles Wallace, the real Charles Wallace, with all her might, and he comes back to her. No more Chucky.
The two are swept off the planet by Mrs. Whatsit, and land – with Mr. Murry and Calvin – back home, in the Murry twins' vegetable garden.
Mrs. Murry and the twins come out for a massive group hug, and Fortinbras crashes through a screen door to join in.
Meg feels an extra love-n-joy boost, and knows Mrs. Whatsit, Mrs. Who, and Mrs. Which much be nearby.
She sees their shimmering presences, and Mrs. Whatsit says that they can't say a real goodbye because they have to – and disappears mid-sentence.