Great Britain, in the indeterminate future. Alex (Malcolm McDowell) is a very aggressive young man who has two passions: unbridled violence and Beethoven. He is the head of the druggist gang, who give free rein to their wildest instincts beating, raping and terrorizing the population. When this escalation of terror leads to murder, Alex is arrested and, in prison, he will voluntarily undergo an innovative re-education experience that aims to drastically nullify any hint of antisocial behavior. (FILMAFFINITY)