The series follows the job of a secret police unit, which is created after the unexpected arrest of an important jihadist leader in Spain. There is not the typical "hero" who can achieve anything he wants, the series is rather focused on the general job of the whole unit trying to chase several terrorists who plan to carry out a terrorist attack. This show remarkably achieves to generate some tension even though it does not especially focus on any specific character.
However, the story does not reach the point of being "exciting", as the narrative does not achieve to be completely engaging and many of the scenes lack impact. This makes the series be in some kind of a middle point between a show and a documentary, as the feeling is that the same story could have been told in a much more engaging way.
Another negative thing is the fact that it caricatures both the police and the political power in Spain. It is true that many times politicians only think about the image of the government and do not care about telling the actual job made by the police, but the series exaggerates this aspect to the power of three.
Overall, although having some negatives the series is worth a shot as it makes an interesting approach to the job of a secret Spanish police unit chasing terrorists not just in Spain, but in several countries. I rate it with a solid 7.5.
