In 1970s Los Angeles, ignoring the eerie warning of a troubled mother suspected of child endangerment, a social worker and her own young kids are soon drawn into a frightening supernatural realm.
In a massive, mysterious chamber, fifty strangers awaken to find themselves trapped with no memory of how they got there. Organized in an inward-facing circle and unable to move, they quickly learn that every two minutes, one of them must die…executed by a strange device in the center of the room.
