Tarzan and Jane are traveling to Paris to help his old friend Countess de Coude, who is being threatened by her brother, Nikolas Rokoff. Rokoff has Tarzan tossed overboard. He survives, comes ashore in North Africa, and goes to Paris to search for Jane.
The film begins with Tarzan and Jane Parker living in the jungle. Harry Holt and his business partner Martin Arlington meet up with them on their way to take ivory from an elephant burial ground. Holt tries to convince Jane, who was with him on his first trip to the jungle, to return with him by bringing her gifts from civilization including clothing and modern gadgets but she tells them she would rather stay with Tarzan.
The animals of the Pridelands gather to witness the celebration of the newborn cub, Kiara, daughter of King Simba and Queen Nala. Simba's father, Mufasa, proudly watches over the ceremony from the Heavens above. As she grows older, Kiara becomes annoyed with her father's overprotective parenting. Simba assigns Timon and Pumbaa to watch her. Kiara ignores her father's warning and the duo's attention and enters the "Outlands," where she meets Kovu, a cub who was chosen by Simba's uncle Scar to be his heir. When Kovu retaliates to Kiara's playing, Simba confronts the young cub just as Zira, Kovu's mother, confronts him. Zira reminds Simba of how he exiled her and the other Outsiders, and she informs him that Kovu was hand-chosen to be Scar's successor.
One night Chinami (Reiko Mishima), the daughter of Hyoue Toba (Reizaburo Ichikawa), is mysteriously kidnapped. Hyoue offers a large reward for his daughters rescue. Yuzuru Kawasaki (Noboru Takashima) and various other men employed by Hyoue set about searching for Chinami. However one of Hyoue's men, Magonojyō Gō (Eizaburo Matsumoto), doesn't partake in the search. Why? Because he was the one who had Chinami kidnapped. Magonojyō's father Senbei has a pet trained ape named "King Kong" (Ryūnosuke Kabayama) and Magonojyō used this creature to perform the kidnapping.
Eleanor Reed (Eleanor Holm) accompanies her parents, Roger and Penny (George Barbier and Hedda Hopper), and Nevin Potter (George Meeker), her fiance, on an expedition to Africa to capture wild animals to sell to a zoo. Ben Alleu Bey (C. Henry Gordon) spots Eleanor and wishes her to become the one hundredth wife in his harem. When she refuses, he follows their safari.
As a young human orphan being raised by gorillas in an African jungle, Tarzan (Harrison Chad) is worried that a fabled monster known as the Zugor (George Carlin) will someday attempt to capture him. He is disappointed that he can't run as quickly as the other young apes in his family, and his attempts to prove himself keep resulting in chaos. When an accident leaves his ape mother, Kala (Glenn Close), thinking that Tarzan has died, the other apes feel that Tarzan has reached a fitting end. Tarzan believes it best for everyone involved if he runs away.
The film begins with animal trainer Fred Mason (Milburn Stone) returning from his latest safari with a horde of animals for his employer John Whipple (Lloyd Corrigan), owner of the Whipple Circus. Among them is Cheela (Ray Corrigan), a gorilla with remarkably human characteristics. Mason relates that she is the most affectionate jungle animal he has ever encountered.
Tarzan and Boy are living on the Great Escarpment, though Jane has returned to England. A small force of German paratroopers lands and takes over the lost city of "Palandrya" as an advance base for the conquest of Sub Saharan Africa. Tarzan continually ignores the requests for help from the helpless and enslaved Palandrians, saying, "Jungle people fight to live, civilized people live to fight."
Jane, qui soigne des blessés à Londres, demande à Tarzan de lui procurer des plantes médicinales qui poussent dans une jungle mystérieuse. Ce dernier, accompagné de Boy et de cheetah, se met en route et traverse le désert. Là, il rencontre une bande d'aventuriers. Tarzan est jeté en prison, il parvient à s'évader et à délivrer Connie, chargée d'une mission secrete et accusée de meurtre...
The film begins with shadowy images on a wall showing a man being attacked by what appears to be a woman. He produces a needle from his pocket and administers its contents to his assailant. She falls to the ground, apparently dead.
The film begins in the laboratory of the eminent biochemist Mr. Stendahl (Otto Kruger). As his assistants, Ann Forester (Amelita Ward) and Don Young (Phil Brown) observe, he successfully concludes an experiment to restore life to a dead rabbit.
The setting is a coastal African village where swimming and diving are central to the culture, hence the term "the Mermaids." Tarzan and Jane (Brenda Joyce) help a native girl (Linda Christian) who has fled the village to avoid a forced marriage to a supposed local god. George Zucco portrays Palanth, the corrupt high priest attempting to force the girl into marriage, and Fernando Wagner plays a con man impersonating the god Balu.
Alakazam is a young and brave monkey (a macaque) who has been encouraged by all the other monkeys to become their king. After attaining the throne, he becomes rude and dictatorial, and does not believe that human beings are greater than he is. Then he tricks/forces Merlin the magician to teach him magic (reluctantly on Merlin's part, who warns Alakazam that the powers he acquires now will bring him much unhappiness later).
British botanist Dr. Charles Decker (Michael Gough) goes insane after he discovers a serum that turns his chimpanzee subject Konga into a ferocious gorilla-sized ape. To further his hideous experiments, Dr. Charles Decker mesmerizes the chimp and sends it to London to kill all his former enemies. Among his targets is Dean Foster (Austin Trevor) Professor Tagore (George Pastell) and Bob Kenton (Jess Conrad), the lover of Sandra Banks (Claire Gordon), the woman the doctor wants for himself.