When Eliza, Darwin and Donnie are flung from a Matadi-bound barge and stranded on the banks of the Congo river, they must traverse the cliffs and crags of mountainous Zaire in order to catch up with her family.

When the girls discover that their parents have mistakenly taken embarrassing home movies to an awards banquet, they join forces in order to save face. Their cross-island trip turns into a race against time in order to beat their parents to the podium and stop the world from seeing them at bath time.

Hungry for adventure, Eliza convinces her mother that she should take a llama over the Andean pass, meeting her family on the other side of the mountain. However, she is disappointed when her safety-conscious father commandeers the lead. Along the journey, her frustration builds as each attempt to explore is foiled by her father's watchful eye. Finally Eliza gains new respect for her father's resourceful manner, when he saves her life.

Eliza succumbs to peer pressure from a ""teenage"" elephant, which gets in the way of her closeness with Marianne on an overnight trip.

With the commvee broken down in the desert and no water left to survive, the Thornberrys go through desperate measures to maintain their sanity. However, on the verge of dehydration, Eliza convinces her family to perform the rain ritual pictured in a nearby monolith. Everyone cheers as the rains pour down among them.

When Eliza gets a hunch that foul play has led to Darwin's disappearance, she sets out to rescue her long lost companion. To her dismay, she finds Darwin has become one of the most popular acts at an Indian palace where a young prince lives. It's up to her to prove to Darwin that friendship runs deeper than the glamour and glitz of showbiz.

Eliza gets in over her head when she assumes responsibilities she can't handle. She is soon forced to don scuba gear and rescue a fumbling Nigel and a tumbling commvee under the dangerous waters of Australia.

When Kip and Biederman cause an oil spill, Eliza must save her sea otter friends.

Challenging an ancient Maasai legend, Eliza marches into a ""haunted"" forest to prove her bravery. Now, with night falling, Eliza must place her trust in the mysterious legends of the Maasai in order to find her way safely through the dark forest.

Eliza and a Chinese girl, Arioka, secretly switch places so Eliza can ride across the desert on camels and Arioka can ride in the Commvee. But Arioka's parents change their plans and Eliza must figure out a way to get them back to the Thornberrys.

A trip to the Great Wall of China finds Eliza in hot pursuit of a panda and his mother.

Location: The border of Oaxala and Zaachula, MexicoAs the family prepares to film the ""Day of the Dead"" ceremony in a small town, Eliza meets a little girl who tells her about the spirits returning. Eliza is determined to find one, but when Donnie puts a vaulable ring in a loaf of bread, Debbie and Eliza must search for the missing ring. Eliza gets some help from a mysterious woman who, she finds out, has been gone for many years.

Location: BhutanA trip to Bhutan, finds Marianne and Debbie out in the cold, and Eliza and Darwin on the run from the border police.

Location: TanzaniaThe Thornberrys are in Africa for the opening of a new chimpanzee sanctuary which will also be attended by Jane Goodall, famous for her work with primates. When Eliza meets her and introduces her to Darwin, Dr. Goodall tells her that she disapproves of domesticated chimps. Will Eliza be able to convince her that Darwin WANTS to stay with the Thornberrys? Meanwhile, when poachers trap Eliza and Darwin, will Dr. Goodall, Nigel and Marianne be able to rescue them?