Unstoppable

Finally reunited with Abel, Penelope Kendall tries to find her footing as they build their life together in a world without walls, a feat that proves harder than expected with three extra humans to guide and yet another Executor warrant on her head. Meanwhile, a storm has been brewing in her absence, one that has its roots in her family's mysterious past.

Do Pen and Abel have what it takes to confront these new challenges, or will they be torn apart by powers outside their control?