Emma, a captivating young woman in her twenties, has lived without sight for two decades. After undergoing a groundbreaking eye surgery, her vision is partially restored. However, she faces challenges as her mind occasionally delays in processing what she has seen. One evening, she is startled awake by noises from the floor above. As she cautiously looks out from her doorway, she notices a mysterious silhouette coming down the stairs. Believing her neighbor has been killed, she contacts the authorities, but soon doubts whether her newly regained vision might be deceiving her.