Delta 1 struggles with conflicting emotions triggered by what turned her into the most powerful being during the zombie apocalypse.
Naomi and Noah try to contain the growing threat of a virus spreading out of control.
The origin of the virus comes to light.
Destroy everything or rebuild the entire world? Humanity or zombies? Who should survive?
The fate of humanity depends on a small group of people, and Delta 1 must face herself to decide which side to choose.