Carla Moran, a single mother living in Los Angeles, experiences a brutal and inexplicable physical assault in her home. Struggling with the trauma, Carla seeks help from a psychiatrist, Dr. Phil Sneiderman, who initially believes her experiences are the result of psychological distress stemming from past abuse and emotional turmoil. Despite his efforts to treat her, Carla continues to endure violent attacks that she insists are perpetrated by an invisible entity. As these occurrences escalate, Dr. Sneiderman's skepticism gradually gives way to concern for Carla's well-being.

Desperate for answers, Carla turns to parapsychologists who propose radical measures to investigate the entity's existence. The team employs experimental technology and unconventional methods to document and potentially capture the phenomenon tormenting Carla. While their motives and techniques generate further tension and controversy, Carla remains determined to find a resolution to her plight. The struggle between scientific explanation, psychological theory, and supernatural occurrence continues to heighten as her attacks grow more severe. The film builds towards an intense confrontation that challenges the boundaries of reality and human understanding.