Brandy is one of two henchwoman, including Abigail McKay (Louise Sorel), who work for a local bigshot criminal. They are attempting to steal the plans for a new experimental iron-clad submarine. They plan to shut down the Golden Gate.
Brandy serves as an inside agent dressed as a French Maid in the home of the criminal to obtain secrets from his guests.
Jeff Cable (William Shatner) and Cash Conover (Doug McClure) go undercover as foreign agents in an attempt to steal the plans back.
Brandy at one time drags a knocked out soldier who has been snooping around the house.
In the end, the thieves are arrested including Brandy and Abigail.
- Francine York appeared as the henchwoman Lydia Limpet in the 1966 episodes "The Boodworm Turns" and "While Gotham City Burns" for the TV series "Batman".
- Francine York appeared as the evil Niolani in the 1967 episode "The Colonist" in the TV series "Lost in Space".
- Francine York appeared as Dr. North in the 1970 episode "Doomsday" for the sci-fi TV series "Land of the Giants".
- Francine York appeared as Queen Medusa in three 1979 episodes of the TV series "Jason of Star Command".