You could apply the Karate Kid formula to anything with varying results.
High school student with dreams of becoming a grillmaster has to move to a new city because his mom got a new job. He gets picked on by a group of elite grillmasters. Apartment handy man beats up the grillmaster gang and it turns out that he too is an elite grillmaster and teaches the high schooler far east grilling techniques for the big competition.
True, it is a common enough trope. We've all seen plenty of movies that follow it. But in the case of this movie, it's in how it's applied. If you watch the movie, you would see what I mean. It's less generic trope, more inherently implied, through dialogue, story beats and ideas throughout the movie, that it's trying to copy the Karate Kid more than anything.