Early pioneers settling at opposite ends of the Great South Land strive in the face of overwhelming environmental encounters, battling against everything the merciless climate of a fledging nation can throw at them. The Parnhams, a blue blood family, settle in the lush farmlands east of the burgeoning city of Sydney and thrive on the fleece of their prize merino flock, ensuring generations of wealth, success and growing status. In the stifling heat of outback Queensland, the Cuthbertsons are confronted with drought, choking dust and the tyranny of distance, achieving success and the respect of their community. The commencement of World War II ultimately interferes with the respective lives of both the Parnham and Cuthbertson families. Ripples are set in motion that cause the families to question their morals and their place in society, ultimately threatening to bring down the government of the day.