A bioterrorism incident occurs at a university in Western Australia. Chris and Piers from BSAA's anti-bioterrorism unit head to the scene to investigate, and they cooperate with former S.T.A.R.S. member Rebecca, who is teaching at the university. On the scene, they meet a mysterious young man named Tyler Howard…

Thirteen men and women wake up in a mansion, not knowing who each other is or why they have been abducted. To escape from the mansion, infested by Zombies, they must work together but cannot set aside their suspicions that one or more of their number is involved.