When his father was arrested for drug trafficking, thirteen-year-old Jack Osborne, his older sister Joanne, and their mother were forced to take on new identities through the Witness Security Program. They settled in Elko, Nevada, and Jack Osborne became "Zach Granger." But the Grangers were soon discovered. Drug lord Alonzo Alznar tracked them down and, if it hadn't been for Sam--a custodian at Jack's school with a secret past of his own--the Grangers wouldn't have made it out of Elko alive.