The plot itself was very interesting but what made this drama all the more great was the acting. By god were the characters amazingly cast. Every expression, every word, every movement (especially from Yeon Woo Jin and Park Hye Soo) was perfectly carried out. The ending (no spoilers) was so brilliant, tying the whole story together just in time. There was definitely a moment of catharsis which is why I appreciated this drama even more. Although the dark themes were explored thoroughly, there was always time for humour and a light hearted atmosphere. Nothing was left out.
Overall, I highly recommend this to all those who enjoy dramas exploring real-world problems.
Also, to anyone who just likes a good laugh every now and then.
Go ahead and watch (available on DramaCool).
And E N J O Y.