Tintin, the Thompsons, Captain Haddock, and Snowy must go to Peru, where Professor Calculus and other professors have been taken prisoner. They try to rescue him from a ship, but learn that he is in the "Temple of the Sun," where he is to be executed for wearing an Incan artifact as a bracelet. It is up to Tintin and his friends to find the Temple of the Sun, and endure a series of battles with the weather, the mountains, crocodiles, and a condor, before the final battle and the last chance to save Calculus and the other professors from seemingly certain doom.