neo zeed is threatening the world once more. the evil crime syndicate - thought to have been vanquished two years earlier - has returned, headed by a man known only as the shadow master. joe musashi has felt their presence, and descends from the lonely mountaintops of japan to face his nemesis once more. as the shinobi, stronger than steel and faster than a whirlwind, the last keeper of the oboro ninjitsu techniques, only he can stop neo zeed.