Watch 18 Kilohertz for Free: How to Stream the Movie Online at 123Movies. . «18 Kilohertz» refers to a sound frequency that adults cannot hear. The film focuses on the realities which faced teenagers in Kazakhstan in the late 90s, at the time of the drug boom in Almaty. It tackles one side of the conflict between the child and his parents leading to his alienation and flight from home. What makes the teenager prefer romantic asphalt streets to the cozy parental home?