Missing: One fabulous jewel-encrusted belt, once owned by the ancient emperors of Japan. But when The Three Investigators offer their services to an official at the Peterson Museum, the boys are told that chasing thieves is work for professional detectives, not kids. Then a strange twist of fate brings Jupe, Pete and Bob back to the case. Soon the boys are surrounded by master criminals - who will stop at nothing to keep the stolen fortune!
