Jeffrey Thorpe (Thomas Ian Griffith), discharged from the military for defying orders, sails the Caribbean in his ship Sea Wolf as a mercenary who takes whatever jobs come his way. When he meets the alluring and cryptic Helene and she presents him with a puzzling gold coin, he agrees to search for Montezuma's treasures and return them to the rightful government. However, this task will prove far more challenging and deadly than his other ventures.