The story begins with a classic "substitute" gag - the heroine was selected into the palace because she looked exactly like the emperor's young Bai Yueguang. But she is not a pawn to be manipulated, but a "Black Lotus" who is proficient in pharmacology and human nature. She used her "substitute" identity as the most perfect disguise. In the thrilling harem chess game, she grew from a chess piece to a chess player playing against the emperor and powerful ministers step by step.
