English agriculture scientist William Farrer, on a health trip to Australia, advises his friends (
Ossie Wenban,
Queenie Ashton) to invest money in wheat farming. In a hotel in
Queanbeyan, Farrer hears that rust is playing havoc with farmers' crops, and his friends, who were ruined, have both just committed suicide. Searching for a cure for rust, Farrer meets Nina De Salis, daughter of a politician. They fall in love and get married, though her father strongly disapproves. Nina and Farrer cross strains of strong wheat at an experimental farm. Farrer is encouraged by government scientist Dr. Guthrie. However farmers plot to burn his farm and millers will not grind new strains of wheat from Farrer for flour. Farrer keeps at his work and inherits money from relatives in England. He is finally recognised for his achievements, hands over his work to his young assistant (Eric Wright), and soon afterwards he collapses and dies in his office. == Cast ==