What is a short summary for the book A Wrinkle in Time?

Meg Murry, a bright but insecure teenager, embarks on a perilous journey through time and space to rescue her scientist father who has been trapped on the planet Camazotz. Guided by three mysterious, celestial beings - Mrs. Whatsit, Mrs. Who, and Mrs. Which - Meg faces her own internal darkness and confronts the evil force that rules Camazotz. With courage and the power of love, she must save her father, restore balance to the universe, and embrace her own unique identity.