——In this seemingly luxurious and treacherous palace, will the true feelings of the past disappear under the erosion of the passing years?
A pair of sisters who have been together since childhood reunited in the palace after a long separation. What faced them was the endless fighting in the harem and the uneasy suspicion between them. She only longed for an ordinary and stable life, but she never thought that hatred and betrayal would push her to the edge of a conspiracy; she longed to meet a lover who could stay with her for the rest of her life, but fate took her longing away. How many traces of true love are there in this deep palace, engraved in the heavy historical records? Perhaps, everyone has been lost in this small piece of sky, and the happiness that each other truly desires is gradually drifting away from themselves.