Horror in which a group of Detroit residents attempt to get to the bottom of a mysterious power cut that appears to have depopulated the city. When news reporter Luke (Hayden Christensen) awakes one morning, he is surprised to discover that none of his electronic equipment works and ventures outside to see what is happening. The scene he stumbles upon is truly bizarre - a city with no residents, but cars and clothing discarded everywhere, as if the majority of the city's population simply vanished into thin air. Eventually, Luke stumbles upon fellow survivors, including James (Jacob Latimore) and Rosemary (Thandie Newton). Together they try to form an understanding of what happened and avoid the same fate befalling them as the total darkness of a city without power once again closes in.