Based on a real classroom experiment, this German drama follows a high school teacher who, to demonstrate how easily authoritarianism can take hold, organizes his students into a disciplined movement called 'The Wave,' complete with uniforms, salutes, and a charismatic leader — only to watch the exercise spiral rapidly out of his control. What begins as a lesson about the seductive appeal of fascism becomes a chilling illustration of how quickly ordinary teenagers embrace groupthink and tribal identity. The film's unsettling relevance to modern political polarization has made it a frequently assigned classroom text in its own right.