The Lost World: Professor Challenger claims that dinosaurs are alive and thriving in the Amazon; but the London press doesn't believe him. Edward Malone, a newspaper reporter, learns that the claim comes from a diary given to him by explorer Maple White's daughter, Paula. But Paula gets marooned at an Amazon plateau, and soon Malone's paper funds an expedition to save her. Joined by hunters and explorers, the group not only finds Paula but living dinosaurs as well... and they bring them to London! Voyage to a prehistoric planet: It's the year 2020, and cosmonaut Marcia orbits Venus while two astronauts and a robot journey to the surface. But soon they are attacked by prehistoric creatures, losing their robot and nearly their lives.