For more than 500 years an Inca princess lay peacefully buried atop Peru's highest peak, perfectly preserved under a shroud of ice and snow. Now the mummy has been uncovered by Emma's and Joel's Uncle Jake, a fortune hunter who may have unwittingly awakened a long dormant curse. A startling discovery about the mummy's necklace fuels an international search for its origin, as it may hold the long sought secret to fighting global warming. Backed by a global science team, teens Emma and Joel Morgan journey with their uncle to Peru's unmapped heartland in search of the mythical Seventh Jewel and a lost Inca tribe. But can Emma and Joel escape the murderous thieves pursuing them? And what of the necklace medallion--is the curse real?