The script is inspired by the novel Tình Sử Nam Phương Hoàng Hậu (Queen Nam Phương's Love Story) by Trần Thị Hảo, and a history book by Lê Lan Khanh. "Queen Nam Phương always shone with intellect, virtue, talent, and agility to survive amid the turmoil of her time." The Last Queen has been prepared and invested in since 2020, drawing from a vast historical archive about Queen Nam Phương and the Nguyễn Dynasty. The Last Queen will mainly be shot at Kiến Trung Palace - the living and working space of King Bảo Đại and Queen Nam Phương and their children. Queen Nam Phương, born Marie-Thérèse Nguyễn Hữu Thị Lan, was the first and primary wife of the last King Bảo Đại of Việt Nam from 1934 until her death.
