She couldn't speak like other kids. But she saw stars where no one else looked. 11-year-old Marcellina lives in a world of colors, stars, and silence. Autistic, imaginative, and full of wonder, she clings to her stuffed dog, Flip, and her brother Caleb-the only person who's ever truly understood her. But when a devastating diagnosis shatters their fragile world, Caleb must step far beyond the role of a big brother and become her anchor, caretaker, and voice.