This romantic drama set in a Venezuelan jungle is based on a novel by W.H. Hudson about Rima, a mythical "bird-woman" and her love for Abel, a man running from political assassination. In this adaptation, Rima (Audrey Hepburn) is a real woman living in the jungle with her adopted grandfather Nuflo (Lee J. Cobb). Abel (Anthony Perkins) escapes his pursuers and meets Rima after a local tribe has taken him under their wing. The unlikely couple fall in love but Abel is haunted by his desire to go back into his world to avenge his father's murder at the hand of his political rivals. While he is struggling with his own dilemma, the local tribe is beginning to believe that Rima is an evil spirit they must destroy.