It's been two years since Kasumi chose the Kunoichi lifestyle and she now has a new enemy in Hattori Hanzo. Hanzo's wish is to penetrate the Ueda castle. So he enlists his own Kunoichi to seduce the gatekeeper, probing him for security loopholes. When Kasumi tries to thwart Hanzo's plan, she's nabbed and humiliated by Hanzo. A prostitute and lover of the gatekeeper, Kosode, comes to Kasumi's aid and a bond between them is formed. But is it strong enough to withstand the powerful Hanzo and his evil schemes?