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. In Paris, Tarzan reunites with his old friend Paul D'Arnot, who informs him that Jane was taken to Africa. Tarzan returns just in time to save Jane from a lion attack, and soon defeats Rokoff and his henchmen.
Mary and Bobby Trevor are castaways befriended by Tarzan. When Lord arrives, looking for the family heir, Black John tries to fill that role and marry Mary in England. Tarzan shows up and marries her instead.
A young linguist named Milo Thatch joins an intrepid group of explorers to find the mysterious lost continent of Atlantis.
When scientists exploring the Amazon River stumble on a “missing link” connecting humans and fish, they plan to capture it for later study. But the Creature has plans of his own, and has set his sights on the lead scientist's beautiful fiancée, Kay.
When Travis, the mouthy son of a criminal, disappears in the Amazon in search of a treasured artifact, his father sends in Beck, who becomes Travis's rival for the affections of Mariana, a mysterious Brazilian woman. With his steely disposition, Beck is a man of few words -- but it takes him all the discipline he can muster to work with Travis to nab a tyrant who's after the same treasure.
The passengers and crew of an airplane are stranded in an unfamiliar jungle. Unknown to most of the survivors is a criminal among them who caused the crash.
Four explorers are summoned to Peru by the brilliant physicist Dr Thorkel. They discover a rich source of radium and a half-mad Thorkel who shrinks them down to one-fifth their normal size when they threaten to stop his unorthodox experimentation.
Frank Flynn is summonsed from New York by his brother Charlie to Vanuatu. He arrives only to find Charlie dead, and becomes involved with his late brother's partner, Viv, and Viv's unhappy wife, Anna.
Adventurer Clint travels across Borneo with a bunch of rogues and geologists on the search for a diamond mine. In the middle of the jungle, they meet a beautiful woman called Samoa. Hardly a surprise that Clint falls in love with Samoa, but trouble with the natives begins when the diamonds are found because diamonds are holy stones to them.
The boy Mowgli makes his way to the man-village with Bagheera, the wise panther. Along the way he meets jazzy King Louie, the hypnotic snake Kaa and the lovable, happy-go-lucky bear Baloo, who teaches Mowgli "The Bare Necessities" of life and the true meaning of friendship.
Though she can spin wild tales of passionate romance, novelist Joan Wilder has no life of her own. Then one day adventure comes her way in the form of a mysterious package. It turns out that the parcel is the ransom she'll need to free her abducted sister, so Joan flies to South America to hand it over. But she gets on the wrong bus and winds up hopelessly stranded in the jungle.
After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.
In the Antarctic, after an expedition with Dr. Davis McClaren, the sled dog trainer Jerry Shepherd has to leave the polar base with his colleagues due to the proximity of a heavy snow storm. He ties his dogs to be rescued after, but the mission is called-off and the dogs are left alone at their own fortune. For six months, Jerry tries to find a sponsor for a rescue mission.
A scientific expedition sets out for Borneo to seek a flower called the Blood Orchid, which could grant extended life. Meanwhile, they run afoul of snakes and each other.
An Edinburgh professor and assorted colleagues follow an explorer's trail down an extinct Icelandic volcano to the earth's center.
A man-cub named Mowgli fostered by wolves. After a threat from the tiger Shere Khan, Mowgli is forced to flee the jungle, by which he embarks on a journey of self discovery with the help of the panther, Bagheera and the free-spirited bear, Baloo.
Stephen, an international trader, tracks down his ex-wife Patricia in some Amazonian backwater. He needs her consent to a divorce so that he can marry Charlotte. Unfortunately, he discovers a son he didn’t know he had – Mimi-Siku. The young jungle boy yearns to see Paris so Stephen reluctantly agrees to take him back home with him for a few days. How will Mimi-Siku react to life in the great metropolis?
David Moore is in East Africa to get to his employer's railway construction site. He's accompanied by the owner's son Brian and they've lined up Jack Cuortemayn, reputedly the best guide available, to take them there. Cuortemayn refuses as he doesn't care for the impact the railroad will have on the local inhabitants. While Moore tries to make other arrangements, he meets Ruth Knight who has lived there for many years working with her father in a medical clinic. There will be adventures along the way but when Ruth is captured by slave traders, it's up to the others to rescue her.
An imaginative elephant named Horton hears a faint cry for help coming from a tiny speck of dust floating through the air. Horton suspects there may be life on that speck and despite a surrounding community, who thinks he has lost his mind, he is determined to save the tiny particle.
Deep in the African jungle, a baby named George, the sole survivor of a plane crash, is raised by gorillas. George grows up to be a buff and lovable klutz who has a rainforest full of animal friends: Tookie, his big-beaked toucan messenger; Ape, a witty talking gorilla; and Shep, a peanut-loving pooch of an elephant. But when poachers mess with George's pals, the King of Swing swings into action.