Sydney Wells is a successful concert violinist who has been blind since the age of five due to an accident. Despite her disability, she's mastered her environment and career through her other senses. However, her world changes drastically when she undergoes a corneal transplant to restore her vision. As her sight returns, she experiences strange, shadowy figures and terrifying visions that she cannot explain. Initially attributed to a form of visual memory as her mind adjusts to sight, her experiences become increasingly disturbing, suggesting that there's a more sinister explanation.

Concerned and convinced that the hallucinations are not just in her head, Sydney is compelled to discover the origin of her new eyes and the unsettling images that come with them. She seeks help from Dr. Paul Faulkner, a skilled visual-effects specialist who becomes her ally. Together, they embark on a journey to understand the truth behind Sydney's newfound visual powers. As they delve deeper into the mystery, they are drawn into a frightening situation that challenges the boundaries between life and death, sight and perception.