Where?
The end of the civil war and the corruption spread by the Supreme Human Alliance ended rather quickly. It was anti-climactic. Michael learned how to use Extraction to remove Lepodya from patients as long as they allowed him to infuse a considerable amount of Extraction's power into them.
After that, Michael would heal them with healing serum. It was rather simple.
However, finding Alice and the other Descendants was far from simple. Michael and the others read some reports about a pristine pillar emerging out of nowhere and swallowing Descendants. The Descendants disappeared with the pristine pillars, leaving traces of spatial fluctuations behind.
These fluctuations were the only hard proof they had to determine that the Descendants weren't dead but that they had been kidnapped.