In the future, the violent and psychopath delinquent Alex, leader of a gang of ultra-violent criminal teenagers who kill, steal and rape, falls into the hands of the police. Arrested, he receives the option to participate in a program developed by the government that can reduce his time in jail. Alex turns guinea pig for experiments intended to curb the destructive impulses of men and solve the society’s crime problems, but ends up becoming powerless to deal with the violence that surrounds him.