Well, I'm not really a fan of science fiction drama. But for me, this one is acceptable. I like the plot, chronology, and lt twist of this drama. However, the storyline sometimes quite confusing. The past and the future got mixed up making the viewer easily lost interest.
The moral of the story is the future cannot change and people are the same. They cannot change the future and it remains as it is.
In overall, I give 3 stars