Nothing can change some destinies. Nothing can break some alliances. Some secrets demand to be uncovered - no matter the cost.

Demon hunter Sully has accepted his destiny and birthright to protect the balance between Heaven and Hell, a promise made to honor both demons and angels. However, with his alliances tested and his injuries surfacing amidst a Hellish uprising, Sully must once more face his friends and enemies, risking the balance he vowed to protect.

The demons unleashed the terrifying Hell Hounds upon Sully's childhood world, while his demonic and angelic alliances faced the test of his loss of Mick and Katarina-the two women he swore to protect. As Elias, Edward, Asmodeus and Jophiel join forces with Sully and the Soul Eater to protect the balance, he discovers that his birthright and destiny will come at a cost - revealing buried truths about the pact that he never fully realized.

Will Sully betray the pact to save those he loves, or sacrifice himself for the destiny and birthright given upon him?