'You said that you wanted danger, didn't you?' says McArdle, the editor of the Daily Gazette. And he sends his young reporter, Malone, on a strange journey into South America with the famous Professor Challenger. Challenger believes that he can find a lost world full of dinosaurs in the middle of the Amazon forest. But this world is dangerous to reach, and, once the Professor and his small group of explorers arrive, things get even more dangerous for them. Will they return alive?