The armies of Earth launch their invasion of Heaven, igniting a battle to end all battles. The Humen, led by a commander wielding secret knowledge, ascend a newly built tower to challenge the celestial realm.
As the war escalates, Ferren and the Residuals face a critical choice: become the hunted or rise as hunters. Amidst infighting and personal turmoil, they must decide whether to ascend to Heaven and confront the invaders. With the balance of power hanging in the balance, Miriael confronts her feelings for a beautiful angel, and the fate of both worlds hinges on their decisions. Will they rise to meet the challenge, or will Heaven fall?