It’s a little hard to desribe the synopsis of this tetralogy to someone who hasn’t read it yet 🙂 and frankly, I won’t even try. Instead, I do recommend to read it yourself – although it’s really a LOT of text, it’s really worth it!
What I can safely say is that the “Matrix”-Films surely took more than one idea from it and that the author creates a closed in itself world/surrounding/basic idea, described colorfully, with a deep love to detail and researched precisely.
Available (of course) on Amazon in the english original and the translated german version. If you do so, remember to purchase the whole tetralogy, it’s worth every penny.