Marco Ruiz is a homicide investigator for the state of Chihuahua, Mexico living in Ciudad Juárez. A family man, Marco is one of the last good men in a corrupt and apathetic police force that is out-gunned by the powerful drug cartels. When a body is dumped on the bridge that spans the "El Paso-Ciudad Juárez" border, Ruiz is forced to work with his American counterpart, "Detective Sonya Cross."