One of Tony and Brad's best with the boys on the hunt for a treasure of missing LSD that has been stolen by a criminal organization. Their quest eventually leads the boys to far-off desert oil ruins where much of the film's best action occurs.

In Ceylon, American Babs Lincoln, daughter of US Ambassador Jefferson Lincoln, is kidnapped. At the same time, an employee of the US Embassy in Colombo is murdered. The crimes bring Joe Louis Walker, alias Inspector X, and Tom Rowland onto the scene, who quickly realize that the cases are connected.