November 1694. The streets of Edo are erupting in violence as two factions struggle for control over the ruling Tokugawa regime. One is led by the shogun's cousin, Lord Matsudaira, and the other by the shogun's second-in-command, Chamberlain Yanagisawa. Each side pressures Sano Ichiro, the shogun's most honorable investigator, to join its ranks. When one of the shogun's most trusted advisers is...