The weakest of them all in the Karate Kid franchise.
After an excellent initial film and a sufficiently honorable sequel, this film comes to us… and there is no way to hide that the quality of the material presented is substantially lower and that the film works badly.
The biggest problem with this film is the script, quite weak, poorly written and full of holes in which the lack of logic and credibility are closely associated with a dose of predictability that makes the film tiresome. The characters were also frankly poorly developed, the villains are stereotyped and loaded (the movie does everything it can to not like them) and the material given to the actors wasn't enough to guarantee a good job.
Even so, it is necessary to recognize that Pat Morita and Ralph Macchio did everything possible to rise to the challenge, and to live up to what the audience expected from their respective characters. Morita remains a sympathetic presence and Macchio is not as immature and stubborn as in previous films, which shows some maturity in the character (although I don't know if this was intentional). The disappearance of Macchio's character's mother from the scene is justified in the most stupid way possible, and the place that was supposedly leased for the bonsai shop looks more like a warehouse than a commercial space.
In the midst of these problems, the film compensates us with regular cinematography, good editing, a pleasant pace and no room for dead moments. Filming locations are satisfying enough. This being an action movie, a fight movie, karate, I expected to have seen some more fights, it has a lot less fights than the previous movies, and the tension is not as palpable, but what was done is quite well done, and the fight choreographies were well rehearsed and carried out.