The battle for Ark seems to be over… but it was only the beginning. Letta has taken refuge with the rebels, and spends her days as a teacher, introducing young children words that never should have been lost. It is dangerous work, but Letta knows that being able to express yourself is what makes us human. But the new ruler of Ark is even crueler than her predecessor, and Letta is horrified to find that they are stealing babies so they can get rid of language once and for all: if babies never hear a single word, they will never learn to speak. Letta and the other rebels must find a way to defeat the evil for good before they lose the very thing that will set them free.