Synopsis: On a boat from Hong Kong, a trio of outsiders -- entertainer Julie Benson, disgraced American serviceman Nick Cochran and tourist Lawrence C. Trumble -- becomes involved with Vincent Halloran, a crooked casino boss from the exotic Portuguese colony of Macao. But when Halloran hears that one of the three new arrivals is working undercover for the police, the previously friendly gangster decides to bare his teeth.