Neo Zeed is threatening the world once more. The evil crime syndicate – thought to have been vanquished 2 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 arch-nemesis once more. He is the Shinobi, stronger than steel and faster than a whirlwind, the last keeper of the Oboro Ninjitsu techniques. Only he can stop Neo Zeed.