A family of incestuous Dutch aristocrats emigrates to New England, and 300 years later, their long-lost descendent returns to the ancestral environs to research his rare blood disorder in this low-budget horror flick based on a mothballed Dan O'Bannon script. Orphan John (Roy Dupuis) yearns for more information about his family -- and the genetic disorder that threatens his life. Arriving on the Maine island to which he's traced his ancestry, just as its cemetary is being dug up and relocated due to health-code violations, he and his wife, Kathleen (Kristin Lehman) encounter a gin-soaked old M.D. (Rutger Hauer) who agrees to help them in their search for more information. Meanwhile, residents of the island begin to disappear one by one and it appears that a race of horrific mutants is to blame. Slowly realizing the links between John's family legacy and the attacks, the island's surviving residents band together to fend off the monstrous threat.