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Teenage rebel Mick Travis (Malcolm McDowell) returns to his upper-crust English public school, caught between the sadistic older boys known as the Whips and the first-year students, known as Scum, who are forced to do their bidding. The petty thefts and anti-social behavior of Travis and his two henchmen, Johnny (David Wood) and Wallace (Richard Warwick), soon attract the attention of both the Whips and the school's out-of-touch administration, and lead to an unexpected showdown.