Wolf and Claudia are once again on the move to shed light on mysterious events. What secrets lie hidden in the Bucegi Mountains, in Venice, and on the island of Murano? Additional puzzles include a felled mysterious pear tree sapling, a skeleton found without a skull, an ancient prophecy, and a dangerous time phenomenon that spells disaster for several people. When Claudia and Wolf visit the ancient ruined city of Nineveh, they discover a kind of time portal through which they witness incredible things.