拉尔夫(布里登·勒马斯特斯 饰)和他的两个朋友不小心弄坏了汽车店老板汉克(Gerard Plunkett 饰)的车子，汉克要求他们赔偿，大家凑足所有的零花钱还是不够，于是拉尔夫决定去做圣诞节临时雇工扮演小精灵赚钱，他的朋友们也都找到了在餐馆…

After committing a series of multiple murders, a neurologist visits an incarcerated killer, living in exile. She studies him and his brain and discovers the horror that lurks behind his violent impulses.