On the eve of retirement a middle class, judgmental snob discovers her husband has been having an affair with her best friend and is forced into exile with her bohemian sister who lives on an impoverished inner-city council estate.

A virus has escaped in a secret facility called "The Hive," turning the staff into hungry zombies and releasing the mutated Lab "Animals" that they were studying. The complex computer shuts down the base to prevent infection. The parent corporation sends in an elite military unit, where they meet Alice, who is suffering from amnesia due to exposure to nerve gas. The military team must shut down the computer and get out, fighting their way past zombies, mutants, and the computer itself, before...