Several attempts on Frank's life follow his meeting with various questionable people aboard a freighter bound for Singapore.
A tribe led by a convict condemns Frank and a photographer (Kitty Moffatt), but custom allows the pair one chance to flee.
Frank and Ali join forces with a newspaper reporter (Dey Young) to save H.H. and expose members of a Chinese secret society.
Frank's dinner with a lovely stewardess (Jenilee Harrison) turns into a nightmare when she is snatched for a rajah's harem.
Frank agrees to escort an important American into the interior, unaware the man is an undercover general marked for death.
The discovery of an anthropologist's journal puts Frank and a scientist (Cindy Pickett) in a race to obtain ancient bones.
H.H. calls in Frank when a royal heiress (Barbara Stock) faces death at the hands of her ambitious uncle (Gregory Sierra).
An undercover agent (Lydia Lei) asks Frank's help to rescue her contact who has been thrown into prison on false charges.
Frank agrees to care for the first lion he ever captured, only to discover the cat's collar is actually a sacred artifact.
Ali receives word that Frank has potentially fatal cerebral malaria after Buck and Gloria have left in H.H.'s private plane.
Frank, H.H. and Gloria go after a murderous warlord (Soon-Teck Oh) to free Ali and to prevent a complete takeover of Malaya.
Frank must bring a woman, children and a urgent message back to Singapore to stop a spy who is posing as an Allied delegate.
Frank travels to a lush valley to stop the Nazis' mining operations there and rescue a peaceful tribe turned into slaves.
Frank winds up nabbing a thief (Alejandro Rey) when he competes with an old nemesis (Don Knight) to capture an ebony cat.
Japanese officers (Sab Shimono, Keone Young) kidnap H.H. who has unwittingly photographed invasion preparations.
In debt to Bhundi for his life, reluctant Frank agrees to help deliver a package, unaware it contains a stolen talisman.
In 1939 U.S. Vice-Consul Gloria Marlowe enlists adventurer Frank Buck to rescue an agent downed in the Malayan highlands.