Chen Xuan, a boy with yin and yang pupils, has 49 days left to his yang life, and is forced to enter a thousand-year-old four-phase killing situation. Wu Zetian's golden slips hide poison in corpses, Liu Bowen searches for dragons and nails to lock the souls of the dead, and the leader of Jiuyou uses AI fortune-telling to spread the calamity. When the destiny compass reverses the cause and effect, the price is to cut out the heart and shorten the life. In this Taoist game of life and death that spans ancient and modern times, the losers are all lunatics gambling on their lives.