In the harsh, yet beautiful Australian outback lives a beast, an animal of staggering size, with a ruthless, driving need for blood and destruction. It cares for none, defends its territory with brutal force, and kills with a raw, animalistic savagery unlike any have seen before.

In the quiet and picturesque Yarramalong Valley, Officers Henry and Brooks find a young woman wandering by the roadside, distraught from events she has just witnessed. Following a report of a possible crash site, the officers suspect the young woman is a survivor; taking her into their care they proceed to investigate. Within the undulating trees, not everything is as it seems. Who has come to Earth? Do we need a hero to save us all?