John is a bright cambridge scientist, who lives a life of intellectual isolation but has always come across as a pleasant fellow. When his girlfriend leaves him, he re-enters the real world in order to experiment with some of his long-gestating theories on how to make the world a better place. He journeys through the English countryside accompanied by his 14-year-old donor child Ronja, whom he tries to convert to the same radical ideas that he believes in. Murder. Elimination. Cleansing: all justifiable in the mind of a modern day European Psycho.