Firedrake, Sorrel and Ben fly onward, but are soon swept off course by a storm, arriving on the shore of Egypt. Encountering a basilisk and a band of zealous archaeologists, the party eventually befriends a kindly scientist named Professor Greenbloom. Sorrel is initially suspicious but soon warms up to him. Professor Greenbloom gives Ben one of two freezing-cold metallic scales he has, which unknown to the humans, once belonged to Nettlebrand. Twigleg relays the news to Nettlebrand, who immediately makes his way to the dig site to find Professor Greenbloom and recover the scales. Meanwhile, the three searchers set out on the advice of the professor to seek the advice of a Djinn, whose thousand eyes can see everything. Ben succeeds in fulfilling the Djinn's arcane requirements with the question: "Where does the Rim of Heaven lie?" The answer to the question appears in two of the Djinn's thousand eyes; it is a path, marked by the Indus River, by a mountain range, and by a monastery. Beyond this monastery is the Rim of Heaven. In the monastery, Ben must break the moonlight on the stone dragon's head. The Djinn also gives them a prophecy: "When that day comes, twenty fingers will point the way to the Rim of Heaven, and silver will be worth more than gold."