At the dawn of the 20th century, a band of adventurers, led by adventurer and scholar Professor Edward Challenger, embark on an expedition to prove the existence of a lost world isolated from the rest of the modern world. The British expedition team consisting of a mismatched group of enthusiasts, all with less than selfless reasons for making the journey begin their trip under less than ideal conditions. The intrepid band consists of:
During their journey disaster strikes and their hot air balloon crashes in the uncharted Amazon jungle, where they end up on the prehistoric plateau. There they find themselves trapped and isolated in this dangerous land. The group is assisted by a young jungle-savvy woman named Veronica Layton (Jennifer O'Dell) whose parents disappeared ten years prior. Her family was part of a research group that became isolated and then lost under mysterious circumstances. Together - along with a young woman from the future named Finn (Lara Cox) who joins the band near the end of the third season - the group fights to survive against the fearsome dinosaurs, tribal headhunters, vicious ape men, and other terrifying perils as they search for a way to escape.
| Season |
|Season 1||Season 2||Season 3|
|1||The Journey Begins (Pilot pt. 1)||All or Nothing||Out of the Blue|
|2||Stranded (Pilot pt. 2)||Amazons||The Travelers|
|3||More Than Human||Tourist Season||An Eye for an Eye|
|4||Nectar||Stone Cold||True Spirit|
|5||Cave of Fear||Divine Right||The Knife|
|6||Salvation||Skin Deep||Fire in the Sky|
|7||Blood Lust||London Calling||Dead Man's Hill|
|8||Out of Time||The Prisoner||Hollow Victory|
|9||Paradise Found||The Games||A Witch's Calling|
|10||The Beast Within||The Source||Brothers in Arms|
|11||Creatures of the Dark||Trophies||Ice Age|
|12||Tribute||Voodoo Queen||The End Game|
|13||Absolute Power||The Guardian||Phantoms|
|14||Camelot||Under Pressure||The Secret|
|15||Unnatural Selection||The Outlaw||Finn|
|16||Time After Time||Quality of Mercy||Suspicion|
|17||Prodigal Father||Mark of the Beast||The Imposters|
|19||Resurrection||The Pirate's Curse||Tapestry|
|20||The Chosen One||The Visitor||Legacy|
|21||Prophecy||A Man of Vision||Trapped|
|22||Barbarians at the Gate||Into the Fire|| Heart of the Storm|
|DVD Name||Ep #||Release Date|
|Season 1||22||January 27 2004|
|Season 2||22||April 20 2004|
|Season 3||22||November 16 2004|
Lara Cox appeared in the second half of the third season as Finn, but was never given credit in the opening credits.
William deVry played Ed Malone in the two-hour telefilm that preceded the series (the film was split into two episodes for syndication purposes). David Orth took over the role at the start of the series proper.
The character of Arthur Summerlee, as portrayed by Michael Sinelnikoff, was killed off in the first season finale, but returned once as a ghost during Season 2.
During the third season both David Orth and Jennifer O'Dell were absent from the series for several consecutive episodes, due in part to financial constraints.
The show was primarily filmed in Gold Coast, near Sydney, Australia.