Talented and extremely ambitious reporter Edward Malone received a humiliating refusal from a beloved girl to marry him only on the grounds that he is too mediocre. The offended young man rushes to the editorial office and begs the authorities to send him to the most dangerous corner of the Earth, so that he can make a report there. An experienced editor gives the young man a difficult task: at any cost to get an interview with the scandalously dangerous, impulsive Professor Challenger, glorious for his hatred of journalists.

After a small but very colorful fight, the professor invites the young man to a conference where Challenger will make a statement that will shock the whole scientific world. It says that dinosaurs and other relic living creatures have been preserved on the inaccessible South American plateau. To support this statement the professor assembles an expedition in which the reporter Malone will become a representative of the press.