Mr Moto (Peter Lorre) is on the trail of ancient Chinese scrolls which when bought together will reveal the location of Genghis Khan's secret tomb and the vast treasures held within. He isn't the only person after the scrolls but the holder of most of them Madame Chung (Pauline Frederick) isn't interested in selling them because of the great dishonour in descretating honoured ancestor tomb...
Mr Moto continues his search for the scrolls, his search intertwining with young American couple Joyce (Jayne Regan) and Tom (Thomas Beck) who are also interested in ancient Oriental artifacts seemingly like every Westerner in Beijing. However also after the scrolls and with less honourable intentions in mind is the brutal Herr Koerger (Sidney Blackmer) and soon Moto, Joyce and Tom are in fear for their lives...
An excellent crime caper and adventure romp, the Orientalism is laid on thick throughout and is frequently so over the top to be hilarious.