The Terraformers

Destry's life is dedicated to terraforming Sask-E. As part of the Environmental Rescue Team, she cares for the planet and its burgeoning eco-systems as her parents and their parents did before her.

But the bright, clean future they're building comes under threat when Destry discovers a city full of people that shouldn’t exist, hidden inside a massive volcano.

As she uncovers more about their past, Destry begins to question the mission she's devoted her life to, and must make a choice that will reverberate through Sask-E's future for generations to come.

Synopsis from Open Library.