Andor gives us the best reason to date as to why the rebellion exists. Sure, having a crazy Emperor and a force sensitive Sith in charge of the galaxy is bad, but the stories have always been about Darth and Luke. We've never really seen how the Empire's influence affects the daily lives of regular people. Andor explores this concept, and in the process shows the origin of the rebellion.
Andor is unlike any other Star Wars show we've seen before. There are few pew-pew battles, few Stormtroopers, and no one is using the Force. What we get instead is a display of the increasingly powerful Empire and its Imperial Security Bureau (ISB). You see the Empire expand its reach, invading planets and affecting the daily lives of people. It feels less like Star Wars and more like something that could occur today in a communist society.
Cassian Andor is looking for his sister when two private sector security guards start bothering him. He ends up killing them. The Empire becomes aware of the situation, and an overly-aggressive ISB agent suspects this could be more than a random crime. Andor becomes an Imperial target, and while trying to hide he becomes involved in a small rebellious gang who plots to rob an Imperial armory. They are successful, but in doing so set up a chain of events where the Empire becomes overly aggressive in their attempt to keep galactic order.
After the robbery, Andor is hiding at a beach-side vacation spot when he is arrested randomly (an example of the Empire's anger and stupidity, as they don't realize they have the man they are looking for under arrest). The prison scenes are some of the finest episodes of Star Wars content ever created. The psychological terror the Empire is able to provide feels real, and it is here where Andor learns he can lead a Rebellion against the Empire.
This show feels less like science fiction and more like a cold-war era spy thriller. It relies less on action and more on dialogue. Tatooine isn't even mentioned, which is a good thing. Instead, we're introduced to a new planet called Ferrix, which is refreshing. This is the best looking version of Coruscant I've seen. The music is super cool too, with an 80's horror vibe.
I really can't say enough good things about this show. In an era where Disney is churning out Star Wars shows left and right, a lot of them feel a bit recycled. Andor, however, is different. It is gritty and has a more "real" feel to it. It does away with a lot of the things that Star Wars relies on for stories - the Force, lightsabers, Jedi, etc., and instead tells a story about real people trying to survive the terrible regime that is the Empire. I'm already looking forward to season 2.