This movie is SO impressive, I have watched it two times today. With no plot line or appropriate ending, I have to say I have found the best lousy ninja movie ever made. To match the caliber of the movie, I will summarize it really badly. It's for some reason about ninjas and then there is an American agent for some reason that ends up being a red ninja for whatever reason, and apparently it's important to be a red ninja. Then he fights and they use stop frame to make the ninjas vanish really poorly. Then there are ninjas blowing up and then the red ninja does his kuji-in hand movements and explodes or something then the movie is over.
I bought it for 5 cents at a thrift store. I would have payed two, maybe even three times that much for a movie this good.