Directed by Gordon Hessler
Written by James Booth
IMDB

Akira Saito (Shô Kosugi)and his family move to America from Japan to open a restaurant. A couple crooked cops store stolen goods in the back of their shop including the Van Atta necklace. One of the cops decides to keep the necklace for himself, leaving a syndicate boss trying to get it back from the restaurant's previous owner and then after the Saitos.
Limehouse has one of Akira's son kidnapped. Akira, secretly a ninja, rescues his son, but pisses off the syndicate. The syndicate begins to turn the screws on the Saito family. They hit one of Akira's sons and his wife with a car, putting them in critical condition.
Akira heads to Limehouse's hideout and kills a lot of his henchmen. He confronts Limehouse telling him that if he doesn't stay away then he'll pray for death (like the title of the movie!). Limehouse, in an act of defiance, commits cry-for-help style suicide, putting him in the same hospital as the injured Saito's.
Limehouse kills Akira's wife, and nearly kills his son. Akira and his other son have a montage over a really hilariously bad song. Then they lead Limehouse and his crew into a warehouse their old (dead) landlord owned. Akira does some ninja stuff and kills everybody.
Another 80s action movie that drips with ridiculousness and cheese. There are many laughable moments, but that's what makes movies like this so fun. Shô Kosugi isn't a particularly good actor, but that doesn't necessarily matter in this style of overblown action movie. What matters is that some stuff explodes, people get beat up by a ninja and there's a montage with a song that is about ninjas, but still doesn't quite fit the tone of the flick. Definitely worth checking out, if you're looking for a mindless, silly action movie.

7/10