Alexandria - one of the cities founded by Alexander the Great - has stood for centuries at the crossroads of the East and West, in the heart of modern Afghanistan. Then the city disappeared: only in the 19th century will Charles Masson, a deserter of the East India Company army, an inventor, archaeologist, inspired by the history of the legendary king, come out on his trail. Starting his archaeological research, Masson did not yet realize that he was destined for a role in incredible events.