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...
