Su Ci, a famous actress in the Republic of China, was forced to work as a stand-in in two time and space - in ancient times, she was a substitute for marriage, and in the Republic of China, she was the stand-in for the painter's deceased wife. When she discovers that her ability to passively travel between the two worlds is not an accident, but the "key" selected by a century-old ritual, she must take back her life in a double conspiracy and emotional game.
