Alicia, a young disabled woman, enters a modern clinic where they use innovative techniques that promise to recover patients' mobility. At the clinic she meets Daniel, a young man who became blind after witnessing his fiancee's death. Everything is going well, and Alicia and Daniel are getting along. But the first night, Alicia hears bumps and whimpers on the top floor--which is supposed to be empty and completely uninhabited.—Darío Billani