In 1893, heavily pregnant Molly Johnson and her children struggle in isolation to survive the harsh Australian landscape after her husband left to go droving sheep in the high country. One day, she finds a shackled Aboriginal fugitive named Yakada wounded on her property. As an unlikely bond begins...
The world has ended. The remnants of humanity now live underground. Tony, one of the last survivors, is tasked with staving off another disaster by pushing a button every 12 hours, as he progresses, he eventually discovers the horrific truth of his world.