A fishing community on a remote Maine island finds itself suddenly cut off from the rest of the world after the ferry stops coming. When people start to vanish, the terrified survivors realize that someone - or something - is hunting them.

Dr. Abe Mandelbaum has just moved into a retirement home. After forming an unlikely friendship with a womanizing gambler, their relationship is tested when they each try to convince a mysterious nurse that they are her long-lost father.