The Female Emperor of the Nine Heavens must undergo a love tribulation, but starts with a negative score. Xiao Yunqi, Crown Prince of Great Xia, is a master of politics and military affairs, but has absolutely no understanding of romance. She slips a token of affection into his arms, and he registers it as military supplies. She tells him a tragic love story spanning three hundred years beneath the moon, and he praises the story, suggesting that she turn it into a book. It is not until the bloody battle at the frontier, within the Immortal-Slaying Formation, that his memories of his previous life fully awaken. The Silver-Armored Divine General who stood before her three hundred years ago was none other than himself. His immortal essence seals are completely undone, and his sword intent cleaves through the heavenly tribulation. Their mutual bond finally comes full circle in this lifetime. After completing all three trials of mortal love, he accompanies her back to the Nine Heavens to become her Dao companion. However, a line of tiny writing flashes in the corner of the tribulation register: the Demon Realm's countdown to winning her back has begun. Thirty days.