I remember when I first started reading The Expanse series and how I was surprised that I found it compelling even though human space travel was limited to our own solar system. No warp drives or hyperspace conduits seemed pretty boring at first, but I eventually came around because limiting the scope of the story to our own solar system made it that much more real. Although similarly limited to our solar system, Executor Rising puts aside realism and instead offers up something much farther out there in concept. The Earth is no longer a habitable planet and mankind instead has The Circuit, which is an interdependent ecosystem that uses Solar Arks to transport needed materials between human colonies that are spread across the solar system. This new ecosystem is just as fragile as the Earth was and it comes under assault for various reasons.
Executor Rising - the start of The Circuit series.