Ninja the Protector
Only a Ninja can defeat a Ninja.
Two brothers, Warren and David, try to defeat the evil forger who is making their lives a misery.
As usual, Godfrey Ho takes an exisiting film and edits in some newly created scenes of Richard Harrison as a spy agency head/ninja who fights about four battles throughout. Tenuous connections are made to the other film by having Harrison look at photographs and make phone calls with redubbed dialogue. Continuity is almost non-existant and the plot (of course) makes no sense when presented this way, but the Harrison ninja battles are still fun schlock.