Shen Qingci, the legitimate daughter of the Prince of Dingbei, grew up with an ancient jade divination tablet left behind by her mother since she was a child. The divination card contains the mystery of the future. On the day of her haircut, the betrothal gift sent by Xiao Yanli, the Marquis of Yong'an, was unboxed. The moment the jade plaque suddenly exploded, the incomplete hexagram of "living the fire and biting the relatives" emerged, pointing directly to the hidden conspiracy in the betrothal gift, and also implicated the blood feud between the Xiao family and the Dingbei Palace - he approached her just to take revenge and seize power, and to use the marriage to evade the palace.
Shuang Ning, the maid next to her, was actually Xiao Yanli's spy, secretly plotting with the Drunken Soul Grass in order to ruin her reputation; Xiao Yanli even forged private letters in an attempt to confirm her crime of "privately deciding her life". Shen Qingci used the hexagram card as an early warning and took every step of the way: exposing the forged secret letter in the betrothal gift in public, exposing Xiao Yanli's ambitions; counter-suing slander against him with a handwriting comparison book, leaving Shuang Ning to suffer the consequences; and even unexpectedly formed an alliance with Xiao Yanli's political enemy, Prince Ning's son Xie Jingyuan.
From a passive chess piece in marriage to a strong man in charge of his own destiny, Shen Qingci interprets the crisis with the help of hexagram cards and uses his wisdom to tear apart the conspiracy. When the heirloom secrets of Dingbei Palace hidden in the hexagram cards surface, she not only wants to protect the family, but also wants to find her own path to glory in the turbulent court.
