In the near future, where humanity has learned to control noise through an implanted device in the ear, silence has become a luxury, and sonic chaos is a memory of the past. In an apparently utopian society, everyone's life is governed by a deep fear of sound vibrations. But a young man named Leo, a brilliant engineer with a tumultuous past, is swept into a dark plot when he discovers a clandestine group that opposes this strict way of life.