How is this funny?

I'm sorry, but South Korean culture can't be this different to think this is funny. Murder, corruption, smearing the name of a good person, ripping off children and old people? This is funny? If they had marketed it as action/mystery/cops/whatever, it might be fine, but this is ridiculous. The special effects? The "funny" sounds and situations, the horrible characters? This is a big loser. The only reason I gave any points at all is the priests, nuns, and the young female detective. Ugh.