|Michael Douglas||Jack T. Colton|
|Kathleen Turner||Joan Wilder|
|Mary Ellen Trainor||Elaine|
A dowdy romantic-adventure writer is hurled into a real-life adventure in the Colombian jungle in order to save her sister, who will be killed if a treasure map is not delivered to her captors. She is helped out by a brash mercenary, and together they search for the priceless gem located in the map.