Four unlikely heroes must overcome their differences to help humanity navigate through the darkness of never-ending war in this action-packed adventure.

It is a time of Perpetual War. The legions of armored Archengardian warriors and the Noda—powered by dark technology—have been shedding each other's blood for as long as anyone can remember. The cause of the hostility has been lost to time, but the battle rages on.

The Navigational Brotherhood has stood in the middle of the conflict for centuries, wielding their magical Ignis abilities not as soldiers but as peacekeepers. Navigators follow a sacred code, three laws they've sworn to live by: to protect and preserve all, to master one's own fate, and to remain loyal to one another. But the Brotherhood isn't what it once was. Its ranks have diminished—and its latest recruits don't appear to be Navigator material.

Enoch Amon is a reckless swashbuckler, constantly risking his life for others. Prince Larocque cannot conjure Ignis, but he's connected to the Brotherhood by blood. Jezna Caelius is a knight, the last of her order, bound by customs of chivalry and honor. And Murta Kaster is a peerless fighter and mercenary, who wants to end the war at any cost. All four harbor secrets as well as suspicion and mistrust of one another.

But it will take their combined talents as a team to obtain a missing artifact, a Talisman known as the Sacred Heart, which the Brotherhood's ancient enemies seek to acquire and use as a weapon of unimaginable power . . .