en Cuevana 3. A thrilling and haunting account of historical events in the Trịnh clan in the late 18th century with the central conflict between lord Trịnh Sâm who was feeble and indecisive, and a cunning and manipulative concubine named Đặng Thị Huệ. Based on the novel of the same name by Nguyễn Huy Tưởng.