Burke is in Mexico City to try and learn who is behind an assassination attempt against Pablo Vasquez, the Mexican Government's Labor Leader, who very pro-U.S. He discovers that a proposed peace treaty is the reason behind the attempt on Vasquez while he was watching the renowned female matador, La Tigra. Burke gets himself thrown in jail in order to question a suspected conspirator, but learns nothing. La Tigra distracts Burke while he is guarding Vasquez and Vasquez is kidnapped. Failing to kill Burke, La Tigra confesses that she was only in on the plot because she was being blackmailed by the leader of the plot, Darvas. Together, Burke and La Tigra rush to her ranch where Vasquez is being held captive by Darvas. (thetvdb.com)