A sheriff in a coastal Maine town discovers the gruesome handiwork of a feral clan that preys on unsuspecting locals. The family, comprised of brutal and primitive savages, has been operating with terrifying efficiency, leaving the community in a state of paranoia and fear. When an unsuspecting group of New Yorkers moves into their vacation home in the isolated area, they become the latest targets. The helpless group quickly realizes that they must band together and fight for survival against the relentless and bloodthirsty aggressors.

As the invaders infiltrate the home, tensions run high, and the boundaries between civilization and savagery blur. Boundaries are pushed emotionally and physically as each member of the group confronts the primal fight-or-flight instincts within themselves. The battle for survival becomes a relentless and harrowing ordeal, testing the limits of human endurance and willpower. The story builds to an intense confrontation, exploring themes of survival, humanity, and the thin veneer of society that can shatter under extreme duress.