The Activator

Officially, Grace and her friends are underage aliens on the run from the authorities, revolutionary gangs, and their families. Unofficially, they are screwed.

For an Earth-girl who always has a solution, falling through a portal to an alien mining world leaves Grace without a quick fix. But she's got this, she can survive anything with her friends at her side--until they disappear.

Trapped and running out of time to find a way home, Grace must navigate the rugged terrain of an underground wo...