I enjoyed seeing a movie set in South Korea. However, the entire premise of the movie is implausible to me. It doesn't seem to make sense that this family of "losers" can instantly become well groomed, have fancy clothes, etc. It's so distracting, it pulled me out of the immersion.
On the positive side, the twists and turns are fun. Even still, there's another problem. We've seen most of those cliche situations before. The final twist does add a unique movie twist but, in my opinion, it's too little, too late.
It was worth watching. Barely.