South Korean backpacker Sang-Woo joins his brother Shin-Woo and friends Cass and Donkey for a road trip across the Australian Outback. But, as they reach Lake Hart, in the red heart of South Australia, they cross paths with Mitch, a sociopath with ultra-violent tendencies. Unfortunately for Sang-Woo and his friends, Mitch could be the least of their worries when help arrives in the form of rouge outback Chief of Police, Anna Murray. When taken back to recover at her isolated Outback homestead, they discover Anna has been keeping alive her daughter’s soul by nurturing the swarm of flies that consumed the girl’s flesh, in the months after her accidental death.
And, to make matters worse, Anna feels she must continually feed the flies (backpacker innards) or they will fly away and leave Anna alone in her very large house in the very lonely Australian outback.
It’s as if they’ve jumped out of the frying pan and into the fire, but the been rescued by a giant, psychotic spider.