The sun was setting when the boy's heart sounded a danger signal. They were surrounded by gigantic dunes, and the boy looked at the alchemist to see whether he had sensed anything. But he appeared to be unaware of any danger. Five minutes later, the boy saw two horsemen waiting ahead of them. Before he could say anything to the alchemist, the two horsemen had become ten, and then a hundred. And then they were everywhere in the dunes.

They were tribesmen dressed in blue, with black rings surrounding their turbans. Their faces were hidden behind blue veils, with only their eyes showing.