Elektra witnesses a mystic ceremony that leads her to the never-before-revealed origin of The Hand!

Kagenobu Yoshioka travels the feudal Japan to learn all the techniques and fight styles possible at that period.

Until the day his old sensei dies, and then he's invited to return to his old school. But instead of taking place of his old maester and rule the school following the Bushido, he teaches all the mystical and secret art learnt, and trasform the Samurai's school in the ninja sept the modern world so much fears: The Hand.