A soldier named David visits the Peterson family, claiming to be a friend of their deceased son who died in combat. The family welcomes him into their home, finding solace in his stories and his seemingly kind demeanor. However, as David integrates himself into their lives, a series of mysterious deaths and incidents begin to unfold around them. The eldest daughter, Anna, becomes suspicious of David's true intentions and starts to investigate his background.

Anna's probing reveals inconsistencies in David's story and unsettling truths about his past. As the situation escalates, tension mounts within the household. Anna races against time to uncover the full extent of David's sinister agenda while the family's safety hangs in the balance. The narrative shifts into a suspenseful confrontation that challenges the Peterson family's unity and resilience in the face of an unpredictable threat.