Also, the story is much about geopolitics (if that's the proper word).
Earth has become a stagnant, deteriorating place. Luna is its only outpost.
Mars, still in the process of terraforming, is an upstart, somewhat militaristic, society. Aspiring to become what Earth once was, in another couple of hundred years.
Finally, there is "The Belt." The collection of hollowed-out asteroids. The "Belters" see themselves as being exploited by "The Inners" - Earth and Mars - for the resources that the Belt has.
So, there's a lot of competition going on...and then, something weird happens to upset the tenuous balance of power.
It's by far the most scientifically-accurate sci-fi I've ever seen. No "warp drive," no artificial gravity, and transit between places can take a long long time.
The first three episodes don't "suck you in," but they raise enough questions about what, exactly, is going on. Then, once you get it...you're hooked.
Amos is probably the most moral character - or at least the most un-conflicted.
