A young woman suffers a car accident. When she wakes up, she is locked in an underground cell, kidnapped by a strange man (John Goodman) who claims to have saved her from the day of final judgment. The eccentric captor assures that the exterior is uninhabitable due to a terrible chemical attack, something he does not know if he believes. This is how his nightmare begins, in a spiral of ignorance. The mind of the criminal is impassable, and she will have to try to analyze her enemy in order to survive.