故事发生在未来的欧洲，一所著名大学的分子生物学学院。 基因学专家托马斯·尼尔森遇到了可怕的犯罪分子文森特，文森特因残忍地杀害了许多女性而被逮捕。托马斯·尼尔森是一个年轻的空想家，他的研究使他确信文森特是一只野兽，如果他可以证明文森特的暴力基因是与生俱来的，那么他就可以让文森特免于死刑。但是作为交换，文森特必须让托马斯·尼尔森为他修改基因以消除他身体内的兽行基因。可怕的事情发生了，文森特开始变得有人性，而这个基因学家开始变得暴力......

Stockholm, in the 1950s. Erik is expelled from the local school for getting into one brawl too many. To protect Erik from his violent stepfather’s reaction to his expulsion, Erik's mother arranges for Erik to spend a year at Stjärnsberg Boarding School, the only school willing to accept him. This is Erik's last chance to graduate to Upper School and he promises his mother, for his and her sake, to do all he can to stay out of trouble.