It's the story of a young man named Beni who finds himself in the terrifying situation of being forced to enter the most dangerous tomb in a nearby tomb-field left behind by the long-gone Tastan civilization. SENTINEL begins with Beni outside this tomb desperately trying to persuade Doba to change his mind. He reminds the overbearing and stubborn crime lord that the Tastan tombs have little by way of treasure in the conventional sense and few easily removable artifacts. The amazing technology of the ancient Tastans is simply beyond the best minds of Beni's day, completely inaccessible to modern scientists and souvenir hunters. He also reminds the insensitive Doba that even the great Ramirez was barely able to make it out of Tomb 35 with his life.