Lin Xia, a social worker, inherits her grandmother's old bungalow and is accidentally involved in the suspense of the Republic of China's heritage - the camphor box containing clues to the national treasure, the mysterious neighbor Jiang Xun, the black hand who covets ancient books... In dual time and space puzzle solving, the secrets of her ancestors are intertwined with the dangers of the present world. While protecting the national treasure, she also uncovers the affectionate past between her grandmother and Mr. Shen.
