Sydney Wells (JESSICA ALBA) is an accomplished, independent, Los Angeles-based concert violinist. She is also blind, and has been since a childhood tragedy. After Sydney undergoes a double corneal transplant, a surgery she has waited her whole life to have, her sight is restored. But her happiness is short-lived as unexplainable shadowy and frightening images start to haunt her. As Sydney's family and friends begin to doubt her sanity, Sydney is soon convinced that her anonymous eye donor has somehow opened the door to a terrifying world only she can see.