At first, I taught the story was about the leads who were exes, catching drug sellers, and eveb=ntually falling in love again.
it was really good until ep 8 or 9, the story was at a great pace and I especially like emotional dramas, which gets me involved in the drama like a character itself.
In the first episode, we can see a glimpse of lee dong wook having insane dreams, but that was just a great start it didn't have any special meaning I taught. but in the later episodes they introduce a new charactor and suddenly the story becomes this personal life mission and the drug buyers and sellers, whom in taught were the main villains ware just sidelined.
The story is still great but it becomes a physic murder drama.
And in the 12 episode, I just cried by looking at lee dong wook's state in which he is like a psychologically disabled person.
Overall I think it's a great drama but still, need to see how it unfolds in the future episodes