Specialists gather in a top-secret facility to investigate a series of strange deaths on beaches along the Atlantic Ocean. One of the team's scientists (Nana Gouvea) examines video evidence to uncover a possible parasitic explanation for the fatalities. But when a determined detective (Tom Sizemore) sends her the crazed writings of a mysterious homeless man (Jonny Beauchamp), the scientist slowly learns that the actual threat may be more dangerous -- and far older -- than anyone ever imagined. Can she convince her colleagues (led by Eric Roberts) of the true danger before an ancient force rises from the sea to bring madness and death to all of humanity?

法国一个宁静的小镇，某个夜晚搬来了布莱克一家：男主人弗莱德（罗伯特·德尼罗 Robert De Niro 饰）、妻子麦姬（米歇尔·菲佛 Michelle Pfeiffer 饰）以及他们的儿女瓦伦（约翰·德利奥 John D'Leo 饰）和贝尔（迪安娜·阿格隆 Dianna Agron 饰）。他们看似与其他的美国人没什么两样，然而一系列出格的举止却不得不让人对他们刮目相看。原来弗莱德的真实身份是历史悠久的黑手党家族曼佐尼的一员，为躲避追杀他在FBI探员罗伯特·斯坦菲尔德（汤米·李·琼斯 Tommy Lee Jones 饰）的安排下多次搬家。
　　看似惬意舒适的隐居生活危机四伏，背负着背叛家族罪名的弗莱德终将迎来夺命杀手的拜访……