Ra's new job only gets harder on a voyage up the Nile, leading to a fearsome palace where crocodiles swarm the waters. Then Pharaoh's son disappears. Has he run away? Has he been eaten by crocodiles? Has he been kidnapped, or worse? Ra and his fellow Great Detectives, Khepri and Miu, set out to discover the truth, but the palace is home to many secrets. Can the Great Detectives unravel the mystery, find the missing boy--and make it out alive?