Arthur Conan Doyle is not only the creator of one of the most popular literary characters—famous Sherlock Holmes—but also the author of the first science-fiction work about dinosaurs. After the tremendous success of the novel "The Lost World," which spawned dozens of sequels and film adaptations, the theme of traveling to the prehistoric world became entrenched in literature and cinema for a long time. Professor Challenger, his colleague and opponent Professor Summerlee, the fearless traveler Lord John Roxton, and a young reporter Edward Malow set out on an expedition to South America, where dinosaurs, pterodactyls, ape-men, and primitive tribes live on a remote mountain plateau deep within the Amazon wilderness. The heroes face thrilling adventures full of dangers and incredible discoveries.