The story is introduced by a supposed narrator certify the authenticity. Presented as the nephew of John Carter, it is called emergency in New York and on his arrival, he learns that John Carter was found dead in the morning. In his will, John Carter asks to be buried in a mausoleum opening only from the inside. He left behind a manuscript that will form the heart of the story. In it, John Carter tells what happened to him years ago when he was looking for gold in Arizona with a partner. Attacked by Apaches, his friend is killed and he finds refuge in a mysterious cave where he was seized...