At a near-future Britain, young Alexander DeLarge along with his pals get their kicks beating and raping anyone they please. When perhaps ruining the lives of others, Alex swoons into the music of Beethoven. The state, eager to crack down on juvenile offense, gives the option to experience an invasive procedure that may rob him of agency to an A-Lex. At a time when she's a commodity, can A-Lex change his tune?