Autumn, 1565: After fleeing Kyoto, master ninja Hiro Hattori and
Portuguese Jesuit Father Mateo take refuge with Hiro's ninja clan in the
mountains of Iga province. But when an ambassador from the rival Koga
clan is murdered during peace negotiations, Hiro and Father Mateo must
find the killer in time to prevent a war between the ninja clans. With
every suspect a trained assassin, and the evidence incriminating not
only Hiro's commander, the infamous ninja Hattori Hanzo, but also Hiro's
mother and his former lover, the detectives must struggle to find the
truth in a village where deceit is a cultivated art. As tensions rise,
the killer strikes again, and Hiro finds himself forced to choose
between his family and his honor.