An alien spaceship crash-lands in an isolated town in the middle of the Australian desert, releasing an insidious parasite that attacks the brain of all creatures including humans, making them disorientated, unnaturally strong and violent. Sargeant Jo Sharp, readying for a return to the big city beat, wakes to find the township, her family and friends falling victim to an evil that is spreading faster than it can be contained.
Katie Gatewood's love for her husband Dan is put to the test when Dan's obsessed ex-girlfriend Louisa moves into the house next door, intending to drive the happy couple apart by any means necessary.
Jessica, a single mother, becomes estranged from her teenage daughter Tessa when she starts dating an older man against her mother's wishes. After trying to break up the relationship herself, Jessica soon realizes that the older man is more dangerous than she could've ever imagined.
