When an unexpected betrayal steals our sanctuary, only unity will save us.

I trusted Michael and he betrayed us.

With our sanctuary destroyed, we're on the run. Again.

Shem and his watchers' step into the role of protectors once again but keeping a whole colony safe topside won't be easy.

New threats stalk both day and night. The rules have changed.

Time is running out. And for some of us, this journey will be the end of the road.

Contains mature themes.