The Uusimaa Mutagen

The planetary terraforming project of Uusimaa is failing. The vital biological catalyst, Aarni-Sap, has ceased production, and the planet's toxic atmosphere is creeping back into the habitats. Jalmo Tuohinen is a specialist who cares for Kultavuori, a massive, bio-engineered filter-beast that keeps Sector 4 breathing. When a catastrophic rupture destroys the main capillary tubes, Jalmo inherits not only a hidden cache of the planet’s last pure sap, but also the realization that Kultavuori is mutating. Hunted by the Rauta-Siltalt administration who want to slaughter his beast to extract the catalyst for themselves, Jalmo must use his deep understanding of planetary ecology and mechanical craft to keep his beast alive, synthesize a new future, and fight back against an elite willing to suffocate millions.