Modern relic-restoration expert Shi Buyu transmigrates to the Great Jing Dynasty. The moment she is born, a meteor falls and collapses the western suburbs warehouse where Liu Mingyuan has hidden military weapons. To cover his tracks, he bribes the Imperial Astronomy Bureau and falsifies the celestial records, branding the newborn girl a “disaster star.” When she is three, a reclusive Imperial Preceptor adopts her and takes her from the capital to Zhongnan Mountain. Fifteen years later, her maternal family, the Loyal and Brave Marquis’s household, is framed for treason by Chancellor Liu Mingyuan. The entire family is thrown into prison, with their execution set for seven days later. Carrying half of a mysterious iron token left behind by her master, Shi Buyu returns to the capital to find evidence and overturn the case. Along the way, she meets Yan Shi’an, the late emperor’s son, who has been lying low for twenty years. Drawing on her modern expertise in relic restoration, she can spot flaws in forged secret letters at a glance. But as a woman, she faces repeated obstacles, and Yan Shi’an’s concealed history with the late emperor plunges them into several crises of trust. The two navigate a court dominated by powerful ministers and tangled factions. They must save the marquis’s household, expose the chancellor’s rebellion, and protect the Great Jing Dynasty. Treading carefully at every turn, they progress from testing one another to placing their trust in each other. Together, they set the world to rights and restore peace, while each finds redemption, and at last they confirm their feelings for one another.