Upon arrival in East Africa, members of Ripley's Bureau of Investigation--RBI--discover the locals are terrified by the cries and strange sightings of unbelievable animals, but DUL agents show up and chase the RBI toward a mysterious, lost island.
In East Africa, a young girl learns that one cannot always judge by appearances as she and her mother visit a market in search of kanga cloth and meet merchants who all claim they have the secret to good chai (tea).
When Joseph hears a lion's roar across the East African savannah, he disobeys his father by befriending the lion and his cubs, and tries to save the pride from the threat of traders who Joseph fears are aligned with his father.