After helping Xiao Bai ascend the throne in the Zhenbei General Mansion, he was purged by suspicion and his relatives died tragically. Queen Xin Rong, with the help of her eldest sister-in-law Liu Ling, saw through the emperor's conspiracy to kill people with a borrowed knife. She faked her death and escaped, exchanging identities between her nephew and the prince to preserve her bloodline. Then she returned to the palace, used the opportunity to suppress the rebellion to purge her dissidents, and forced Xiao Bai, who was seriously ill, to make her nephew the prince. She revealed the truth before she died, making him die in regret. In the end, Queen Mother Xin Rongyi listened to politics behind the curtain and cleared the family's grievances.