The survivors rally for one final stand on the rebuilt Cinder Bridge, now the only link between Earth and Ivy’s realm. War erupts in full: survivors, husks, zombies, and Ivy’s reforged army all collide in a storm of ash and blood. Betrayals surface, and a beloved survivor falls. The survivors are pushed to their limits, yet through fire and ruin they realize they must take the fight directly to Ivy’s world if they are to end the apocalypse once and for all.