Gavilan is held captive in Cuba, where he believes his knowledge is crucial to complete a top-secret Cuban-Russian project, but he finds that he is part of an ingenious and dangerous plot, devised by a Russian scientist, to get his beautiful daughter into America via a spectacular escape.

Milo (Patrick Macnee) is kidnapped and held hostage until Gavilan (Robert Urich) recovers $3 million in heroin sunk off the California coast.