SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
New York Ninja Plot Summary and Synopsis
After his wife is murdered, a man becomes a ninja to take revenge on her killers across the streets of New York, in this film that was originally abandoned in 1984 until it was discovered and completed by Vinegar Syndrome.
Source: Wikipedia (CC BY-SA 3.0).