In a small, tightly-knit rural community, teenage siblings Jacob and Sissy find themselves trapped in a nightmarish cycle of abuse and neglect. Their abusive father, a tyrannical presence in their lives, subjects them to constant violence and intimidation. Despite these harrowing circumstances, Jacob, a hulking yet gentle giant with a mental disability, vows to protect his younger sister Sissy at all costs. This promise of protection becomes the core of their bond, providing a glimmer of hope in an otherwise dark and oppressive world. Their mother, an equally suffering figure, is a bystander in the torment, unable to shield her children from their father's wrath.

However, the fragile semblance of normalcy in their lives shatters one fateful night. A chain of terrifying events is set into motion, catapulting the family into a whirlwind of horror and chaos. As the grip of violence tightens, it becomes increasingly clear that extreme and desperate measures are the only means of survival. The siblings' unwavering loyalty to each other faces its ultimate test, with both the past and present horrors coming to a head. In the heat of these harrowing moments, the true depth of their bond and the lengths to which Jacob will go to protect Sissy are revealed, changing their lives forever. The resolution of these events remains steeped in suspense, leaving a lasting impact on the audience.