Sam, Clover, and Alex realize that something very strange is going on after the attacks in the Palace of Versailles. Not only were they attacked by a very weird creature whose footprints are extremely odd, but they also soon discover that several students from their trip have also gone missing. After Jerry informs the girls that the missing key they discovered earlier is linked to Versailles itself, the spies flee from a palace statue that has come to life, as they are reunited with the rest of their class in a dungeon beneath the palace itself. Eventually they learn ...