Sinkiang Desert in China, forces converge in the race to find Ur-Can — the fabled Storm City. Becca and Doug are desperate to reach the lost city and discover their parents’ fate, but enemies, old and new, threaten to arrive fi rst and take control of the ancient machine located there. Can Doug and Becca solve the fi nal mystery and stop the power-hungry General Pugachev from endangering the planet — or will they find their parents only to lose them forever? Weaving in maps, vintage photos, and gatefolds, this fi nal adventure is fi lled with special features, including a foldout of a formidable zeppelin airship.

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