In the ongoing race to find thirty-nine keys, 14-year-old Amy Cahill and her little brother Dan are convinced of one thing. No matter how difficult it may be, they will never stoop to the treachery and hypocrisy of their relatives. But after they discover the truth about their parents, Amy loses confidence that they are still on the side of good, and for the first time seriously quarrels with her brother, who wants to quit the game. So when Dan suddenly disappears in a country of over a billion people, Amy faces a difficult choice: go looking for the next key... or her little brother.