Beck Granger is on a trip to Colombia. His anthropologist uncle has taken him along on a visit to Don Rafael de Castillo, a descendent of a great explorer who claimed to have discovered a lost city of gold. But the secret of the city died with the explorer . . . until now. Beck’s uncle and Don Rafael believe they know where to find the city, but before they find it, they are both kidnapped. With Marco and Christina—the Don's children—Beck must set off into the wilds of Colombia to find the city and bring his uncle back. Along the way he must build a raft, negotiate wild river rapids, make camp, defend his friends from wild animals, and keep them all alive in the jungle. This fast-paced, exciting adventure is also full of real survival details and tips.