Mia Marten does not want to move away from her life in Darwin to South Australia's remote Kangaroo Island, but with her mum's untimely passing she has no choice. When she witnesses the slaughter of feral cats in the quiet island community of Penneshaw, her life takes a thrilling and terrifying turn. Committing herself to stopping animal cruelty, she befriends the alluring Lachlan Carter. Finding that saving feral cats is not a simple task, Mia and Lachlan head deep into bush country, attempting to track down the one person who can help them, Billabong Jack. Part Aborigine and wielder of voodoo magic, Billabong Jack believes he is kin to animals. But he comes with a dark past. Mia's race to save the feral cats quickly spirals into a race to uncover the truth about Jack, and save her own life.