A man who dares to feel finds his life in danger in this cautionary science fiction drama. In the future, after a Third World War has decimated much of the Earth's population, a new nation known as Libria rises up under the unquestioned leadership of Dupont (Angus MacFadyen). Believing human emotions and their expression were to blame for the failings of past societies, The Father has decreed that all citizens must take a daily dose of Prozia II, a drug which levels out the emotional landscape, and that all forms of creative expression are against the law; violating either regulation can be punished by death. John Preston (Christian Bale) is a Grammaton, an elite law enforcement officer who tracks down and punishes "sense offenders." One day, Preston accidentally fails to take his Prozia II, and for the first time begins experiencing emotions himself.