Thanks to the machinations of Ieyasu Tokugawa the age-old truce between the Kouga & the Iga clans is no more
- & now a fight to the death will decide who will reign supreme. Oboro has blinded herself in order to avoid having to kill Gennosuke her lover
- & her rival. Meanwhile Gennosuke has urged the Iga clan to join him on a journey to Sunpu to find out the real motive behind Ieyasu Tokugawas orders to fight. But the Iga have other plans. The hirsute Nenki & the butterfly-wielding Hotarubi rush to assassinate Gennosuke while Tenzen has sinister intentions for a defenseless Oboro. The epic battle of blood & betrayal continues!