Camilla, an anxious teenager haunted by recurring nightmares, becomes convinced that her new neighbor is stalking her. As her suspicions grow, she obsessively documents the neighbor’s every move, allowing fear and paranoia to take control. After a conflict with her closest friend, Camilla decides to act, breaking into the neighbor’s apartment and poisoning her food. Only afterwards does she discover that the real danger never came from the neighbor, but from her own distorted perception. Forced to confront the consequences of her actions, Camilla realizes that fear itself can become the greatest threat.