During a field archeology, the heroine Su Wan touched a broken jade pendant engraved with the word "Hussar", and her soul traveled back to the fourth year of Yuanshou, Emperor Wu of the Han Dynasty, which coincided with the eve of the Battle of Mobei. She discovered that the archaeological diary she carried with her had become a "heavenly book" that predicted the future during the Han Dynasty. Relying on her accurate understanding of history and modern thinking, she approached step by step and finally "picked up" the seriously injured and dying champion Hou Huo Qubing on the battlefield. She knew well that history books recorded that he would die suddenly two years later, and decided to change history at all costs. Using her identity as an "overseas alchemist" as a cover, she used knowledge beyond the times (not golden fingers, but reasonable deductions and improvements based on history, chemistry, and metallurgy) to treat Huo Qubing, and gradually became involved in court political disputes and palace secrets. However, her intervention triggered a backlash from history, and memory fragments from her past life continued to emerge, revealing the life-and-death bond between her and Huo Qubing that spanned thousands of years and was far more complicated than history books. She must make a choice between protecting the love of her life, rewriting the tragedy of history, and dealing with the unknown cause and effect backlash.
