When Pharaoh calls young Asenath's family to come live in the palace in Memphis, she tries to rescue an unjustly imprisoned slave named Joseph, who'd once befriended her. Her adventures take her on a voyage up the Nile, on a quest for lost cats, into service to a princess, and into Pharaoh's court itself. When Pharaoh starts to have nightmares that his priests can't understand, Asenath learns that saving Joseph may save Egypt itself!