"Chaos Walking" is a science fiction novel series written by Patrick Ness. The story is set in a dystopian world where all living creatures can hear each other's thoughts, a phenomenon known as the "Noise." The protagonist, Todd Hewitt, discovers a girl named Viola who crash-lands on his planet, challenging everything he knows about his society. The series explores themes of power, identity, and the nature of truth. As Todd and Viola navigate their dangerous environment, they confront the oppressive forces led by Mayor Prentiss, who seeks to control the Noise and maintain his authority over the inhabitants.