"Day One" manages to do some elements adequately, though it sticks closely to familiar patterns within the science fiction crime genre. Those hoping for something original or intellectually stimulating are unlikely to be satisfied with this Spanish series. It presents a gentle warning regarding the potential dangers of artificial intelligence and large technology companies, but fundamentally, it’s designed as a crime thriller. As expected, there's content addressing contemporary social issues and a suggestion that social media requires oversight, even if that involves compromising individual privacy—a situation currently unfolding in Australia. The performances are consistently good, with nothing to criticize, and the story moves along at a comfortable speed, rarely becoming boring. Ultimately, it’s an acceptable science fiction thriller produced in Spain. It might be worth checking out.

Source on TMDB