Mr Moto competes with a gang of ruthless treasure-hunters for possession of seven scrolls which, when brought together, form a map which reveals the location of the tomb of Genghis Khan, reputed to contain fabulous treasure. Moto already has one scroll, but the rest are owned by Prince Chung and his mother, who consider it a sacred duty to their ancestors to protect the scrolls and the secret of the Khan's tomb. Written by Daniel Frankham