Uptight romance novelist Joan (Turner) lives out her fantasies after she receives a mysterious map from her murdered brother-in-law and her sister is kidnapped in South America--the ransom being the map. Out to rescue her sister, she's helped and hindered by American soldier of fortune Jack (Douglas) whose main concern is himself and the hidden treasure described in the map. Great chemistry between the stars and loads of clever dialogue in this appealing adventure comedy. First outing with Turner, Douglas, and DeVito. Followed by "The Jewel of the Nile."