This show is entertaining because it has some nice action scenes, and very good actors.
But like most of these action cop shows, these are the worst cops ever.
They always break protocol, have sexual relationships with each other even though it's against the rules, get kidnapped, repeatedly drop their guns, let criminals escape, miss obvious clues. Also, they run very slowly when chasing criminals, or at least they appear to run quickly, but they never catch the criminals. They also spend a lot of time yelling, "drop your gun, or I'll shoot," but they never shoot. They just let the criminals get away. And somehow criminals are always able to sneak up behind these cops and whack them on the head. Really poor situational awareness.
I guess screenwriters in every country have to follow the same rules and write the same kinds of scenes over and over again.
Watch to enjoy the actors and the shaky steadycam chase scenes. Try to suspend your disbelief. Insomnia requires shows like this.