It was directed by Lee Wai-chu, produced and written by Yu Zheng, and starred Zhang Ting, Ming Dow, Li Xiaolu, Mickey He, Zheng Guolin, Yang Mi and Tong Liya in the leading roles.

Empress Wang is accused of murdering the infant Princess Andingsi, the daughter of the Emperor and Wu Meiniang.

Helan Xin'er, a detective, and Ming Chongyan, Empress Wang's former lover, decide to investigate the mysteries.

The brother owner was once Empress Zhangsun's best friend and fell in love with Emperor Taizong of Tang.

The detectives later find out that she was a spy and the perpetrator of Princess Andingsi's murder is actually the Emperor, who wanted to get rid of Zhangsun Wuji.