An alien and a robot land on Earth after World War II and tell mankind to be peaceful or face destruction.

Jean Preston is determined to find her fiancée, Greg Jones, who went on a safari and didn’t come back when expected. She travels to Akbar, India with Greg’s father, Colonel Jones, Wayne Monroe and the Professor. She asks about Jones at the front desk of the hotel where she stays.

Neale and Pedro fly cargo between Chungking and Calcutta. When their buddy Bill is murdered they investigate. Neale meets Bill's fiancée Virginia and becomes suspicious of a deeper plot while also falling for her charms.