Hal & Roger Hunt are in for a seriously wild adventure when they make a pioneering expedition into the uncharted waters of the Pastaza River, deep in the Amazon jungle. They’re looking for animals for their father’s world-famous collection. But someone doesn’t want their mission to succeed. They receive sinister anonymous messages, & warnings of head-hunting natives. & then, deep in the remote forest, their expedition goes off track. Facing lethal danger from humans & animals alike, the boys must learn the law of the jungle: survival of the fittest…