As a result of an accident, Allan finds himself completely paralyzed. To help him overcome his depression and regain his will to live, his friend Jeffrey, a brilliant scientist working on increasing the intelligence of monkeys, decides to give him a female capuchin monkey, the result of his experiment.
For greater effect, Jeffrey then turns to trainer Melanie, who specializes in teaching primates to care for the sick. Allan and Ella the monkey hit it off perfectly, and after a while, his new nurse even begins to anticipate many of Allan’s requests.
Everything is going well, and the attraction between Melanie and Allan begins to develop into something more. But soon, the experimental monkey begins to display much more serious — and dark — abilities…