The series follows Zhi Nu, a brilliant young man who, after the tragic loss of his family, reinvents himself as Zang Hai to seek justice. A decade after the murder of his family, he rises to become the Imperial Astronomer of Da Yong, working strategically to bring those responsible for his family's death to justice. Meanwhile, tensions escalate as Grand Secretary Shi Huai Shan plans a war against neighboring countries, threatening the kingdom's stability. Zang Hai and his allies, including Zhuang Zhi Xing and Xiang Wen Yan, must navigate political intrigue and conflict to protect their country and its people. A story of revenge, strategy, and patriotism unfolds.