A family trip to Grand Canyon National Park turns into a nightmare when the Taylor family stumbles upon an ancient secret that unleashes supernatural forces in their home. As they continue exploring nature, the family members discover a forgotten altar and a beautiful yet unsettling collection of stones that unknowingly release dark and vengeful spirits.
Upon returning to their daily lives, they start to experience inexplicable phenomena: strange noises, shadows that seem to come to life, and an unshakeable feeling that something is watching them. As the paranormal events escalate, the family finds themselves caught in a spiral of fear and distrust. The children, in particular, become the targets of these malicious entities, leading the adults to question their own sanity and the well-being of their loved ones.
With the help of a parapsychologist, they attempt to unravel the origin of these occurrences, only to discover that the forces they have unleashed are much more powerful and personal than they had imagined. As time runs out, the family must come together to confront their own demons and uncover an ancient ritual that could help them seal away the evil they have unleashed. The tension rises and decisions become increasingly critical as they struggle to protect their home and their lives from a darkness that seems never-ending.