Mr. Moto (Lorre), who also works for an international police agency, is told to destroy an armory hidden by a fanatical priest (Regas) in the jungles of Cambodia while also foiling anti-government plots against the French. He's helped by aviatrix (and fellow agent) Vicki Mason (Hudson) as well as a couple of fumbling newsreel photographers, Marty (Kent) and Chick (Chandler). 4th in the series.