In the autumn of the twenty-eighth year of Wanli in the Ming Dynasty, a bad omen suddenly appeared in the armillary sphere of Qin Tian Jian.
The Beidou hangs upside down, comets attack the moon, and the Ziwei Emperor Star sadly shifts.
The deputy supervisor Mo Shenyan investigates the conspiracy of the stars, but witnesses the tragic death of his colleague under Tong Gui's watch - the broken-arm body is embedded with the Siamese silk thread used by the supervisor, and the blood-stained armillary sphere gears are tightly connected with the relics of his late father. That night, a masked assassin breaks through the window with a seven-star bone-piercing nail, revealing not only the bloody truth about the twenty-year calendar bill, but also the Xuanji secret that tampered with the destiny during the Yongle period and shocked the Ming Dynasty.
Lu Qingya, the bannerman of Jinyiwei, disguised as a man, has a Beidou scar from the Dongchang burning on his left shoulder, and holds in his palm the Xuanji pendant of an old minister of Jianwen. She split open the underground palace of the Qintian Prison with one sword, revealing the astrological chamber tampered with magnets, the dragon veins of the imperial mausoleum filled with mercury, and the Hongwu Armillary Sphere, which was enough to shake the Forbidden City.
The glazed golden dome of the Secretary of Ceremony reflects the evil stars, the soul-locking needle of Dongchang activates the corpse formation, and the traditional jade seal sleeping underground is faintly roaring as Ziwei shifts. Ten months later, the countdown to the crowning ceremony of the crown prince has begun——
In this secret war with stars as blades and agencies as scheming,
Those who can decipher the celestial phenomena may not be saints.
What turns the blood-stained gears is destiny.
