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?

在父母过世后，Lucas（奥古斯特马图洛饰）是由酒鬼哥哥Tom（迈克尔C曼宁饰）一手养大的。Lucas被同侪霸凌，于是他和树林中的怪物成了朋友，发展出了危险的关系。莉比贝拉（LibeBarer）饰演Anna，一位来自外地的女孩，她和Tom交往，并对Lucas非常关心。丹艾迪亚（Dan Hedaya）饰演警长，他曾和Tom与Lucas已过世的妈妈有过一段情，所以觉得自己有责任要照顾这对孤儿兄弟。