I didn’t expect too much on this and it was very good, all in subtitles with the language Korean, starts off with a guy being put in an underground prison but we don’t Know why. 
I would say try and figure out the twist and go from there.
Btw, you’ll never figure it out

After seeing Hoffa for the 2nd time, I’ve realized it’s the performances by Devito  and Nicholson that stick out and draw me to the film.  Frank Whaley as the trucker / killer was very good and although the plot a little confusing, I really liked it.
John c Reily always good in a small part too.  Nicholson stole the show, outstanding performance.

“We talking words here Dally”

This is not your basic prison movie, it’s not about escape or anything like that, it’s a true story of a bunch of guys that try to rehabilitate themselves through a program called RTA where they learn how to act for a play.
About five or six of the characters are actually the real life inmates that played themselves in the movie and they really nailed it, very interesting.