It's a martial art movie about this guy who owned a karate school... But also worked part time as a dishwasher... He met this korean martial art master ( kind of short and chubby )... They would train on the beach... The master would put him in a hole and would put a wooden board over his leg and he had to jump out without taking it off...
I really want to know the title of this movie... Hope one of u experts find it