梅尔·洛莉的奶奶伯蒂患有精神病,因脾气古怪赶走了护理工,梅尔不得不与男友去奶奶家护理她。伯蒂给了梅尔一小丑布娃娃,但这布娃娃引起梅尔不断出现梦游,并且产生幻觉,死去的爷爷经常出现在身边。梅尔与男友开始调查怪相出现原因,但结果令梅尔惊异,发现死去的妈妈和爷爷是奶奶所杀。愤恨的梅尔,将锤子砸向奶奶……A young woman returns home to care for her gravely ill grandmother, only to begin sleepwalking, envisioning spirits and uncovering dark secrets in her family's past.