Une aristocrate anglaise se retrouve à la tête d'une propriété gigantesque dans le nord de l'Australie. Pour échapper à des jaloux, elle demande à un type rugueux et peu loquace de conduire son troupeau de plusieurs milliers de têtes à des centaines de kilomètres. La Seconde Guerre mondiale n'est pas loin, et les Japonais ont commencé à bombarder la ville de Darwin.
In Sydney, the newly married Midori is honeymooning with her husband, Yukio. She does not love him and fakes her own kidnapping to escape the marriage. Her lover is supposed to meet her, but fails to appear. She goes to a bank to get some cash, only to become a hostage in an unfolding robbery, until the getaway driver, Colin, saves her from his fellow robbers. They hit the road together, with the cops, her husband and the robbers in pursuit.