Tintin sets off to South America to retrieve a stolen fetish. There, all sorts of interests are in conflict: military, economic and the war of the Gran Chaco which had been opposing Bolivia and Paraguay for the past three years. A small Arumbaya statue has been stolen in a museum, then returned. One little detail though will tell Tintin that instead of the original, a mere replica was returned. There must be a secret hiding behind this small statue since its robbery was carefully concealed. This is in South America that Tintin will find the key to this enigma.
