Due to an environmental catastrophe, the population has been forbidden to speak, as it consumes too much oxygen. Those who violate the rules will be punished with cancellation by the government. The population was forced to develop a new language system based on LIS (sign language). These changes have led to a new form of attraction to sound and noise. People are no longer words or thoughts, but sounds. Tosca lives locked up in the house with her family. She dreams of freedom and is willing to do anything to get it. To give the world a voice And you? What noise are you?
Haruna Tsubame, an inconspicuous high school girl, is always sensitive to people’s moods and keeps the peace in school. One day, she gets pushed to become the president of the student council by the people around her. Tsubame's encounter with a man who is a genius speechwriter, leads to a revolution in school. She struggles to change a school full of irrationality and dissatisfaction with the power of words.
Murray Sinclair's acceptance speech for an award in honor of his role as chair of the Truth and Reconciliation Commission of Canada, intercut with the testimonies of survivors of the Indian residential school system.