In order to enjoy a movie like Blade Runner 2049, that is a sequel to the original Blade Runner, released in 1982, you have to either have seen and liked the original Blade Runner or be filled on on what happened in the original so you better understand this film. There are a few sentences at the start of this sequel to the original that talks about replicants and a bankrupt company that makes these replicants but not enough information to know what happened in the last movie.
Additionally, you have to get used to the dark, rainy and very depressing environment of this futuristic world where either a nuclear war, global warming or both have ruined the planet earth forever. For me the constant rain, darkness, bombed out buildings and extremely depressing world of the future offset some of the good special effects. I also thought that the screenplay was pretty hard to follow as the main character of K, played by Ryan Gosling tries to solve a complicated mystery that involves the daughter of the original Blade Runner played by Harrison Ford in the first movie. One bright spot is the virtual character played by Ana de Armas, but overall despite the very high opinions of the critics, over 80% for both Rottentomatoes and IMDB, I cannot recommend this movie, for the reasons I mentioned and for that fact that this movie was too long and boring in too many spots to recommend.