560 AD. In the thirty-seventh year of Jiajing's reign in the Ming Dynasty, the power of eunuchs was overwhelming. To improve the power of yin and yang, the Feng Shui Master decides to create a tiger arena in the center of the capital. But a strange virus infects animals and now hundreds of mutant tigers are breaking out into the streets and drowning the city in blood.

Local constable Xue Buyi keeps his distance from corrupt colleagues until he is framed for the theft of thousands of dollars in relief funds. Now he must choose: fight to clear his name or uphold the law he's sworn to obey.