Summary: a superbly well acted crime drama, but the main characters are a bit glorified, and the plot doesn't make sense

The show starts off in a promising manner-- a man is discovered carrying a body in the subway. We seek the villain who killed this man. At first it's quite interesting to follow Detective Yan Liang's journey to uncover the backstory of the murder, and he gives us a bit of a Sherlock Holmes vibe by making many unlikely associations (which nonetheless are entertaining).

However, the villains turn out to be just a bit too evil and all-powerful, and the (as it turns out, group of) heroes turn out to be completely self sacrificing people who had to resort to a rather irrational suicide plot in order to catch the attention of the law. Just how many people is it worth it for a rational villain to cover up a prostitution ring? It's easy to get watchers to be on your side when you make the antagonists so blatantly evil. The protagonists are also rightfully elevated for sacrificing years of their life. Yet this kind of pure sacrifice doesn't get at the root of the problem, which is how does it reflect on the law that people have to stage murders to make change?

However I was very impressed by the acting overall, especially by Bai Yu's acting here.