"A mysterious person alerts Cruz to impending danger while he and a few trusted pals explore ancient ruins in Petra, Jordan, and search for another piece of the puzzle his mother left behind. Worst of all, now his father has gone missing, which prompts Aunt Marisol, his number one protector, to leave the ship in search of him"--Provided by publisher.

Twelve-year-old Cruz Coronado leaves his home in Hawaii to study and travel with other young people invited to attend the elite Explorer Academy in Washington, D.C., but a family connection to the organization could jeopardize his future.

The Clades are a legendary family of explorers attempting to navigate an uncharted, treacherous land alongside a motley crew that includes a mischievous blob, a three-legged dog and a slew of ravenous creatures.