Edge of Divergence is the thrilling conclusion to the Alliance trilogy, a Young Adult Fantasy series. Three childhood friends, Mirari, Gaven, and Salathiel, are reunited but torn apart by their opinions on the war. In this final installment, they must confront their past, navigate the complexities of right and wrong, and challenge their fates.

Haunted by Mirari's alleged death and disillusioned by the Council's condemnation of her as a traitor, the Knights begin to splinter with conflicting opinions. Violent riots instigated by the Defiants begin to escalate. Unable to control the situation, doubts arise about Fangbane's loyalty, and he faces pressure to align the Knights with the Council's agenda. Believing that Eoin is responsible for the violent riots, the Knights are assigned to track down the escaped leader of the Blessed.

Determined to unravel the truth Mirari knew, Gaven secretly aids Eoin's escape. He and joins forces with him as a clandestine vigilante known as Spiritel to pursue the Defiants and find Mirari. Through his adventures with the Blessed, Gaven realizes that he and the Blessed are one and the same, fighting for harmony and the welfare of the people. Meanwhile, Salathiel stumbles upon Mirari, wounded and lost in the forest. He brings her to Councilor Julie's sanctuary in Valenia, where Mirari learns the shocking truth behind Salathiel's disappearance: he was murdered, then resurrected with dark aura, an insidious, mind-altering substance that fueled the Althaean Siege and subsequent riots. Mirari’s destiny is to master her fire abilities, known as the soul flame, the only force capable of purifying dark aura and stopping Soteria, the leader of the Defiants and bearer of dark aura.

The paths of Mirari, Gaven, and Salathiel intersect as they pursue Soteria, but uncertainty and conflicting loyalties cloud their happy reunion. After a fierce battle, Soteria is captured, and with Mirari's return, the Knights believe that the threat of the Blessed has been vanquished and the empires will return to normalcy. However, Fangbane receives a warning from his clairvoyant son, revealing that the true danger remains. It becomes imperative for Fangbane to unconditionally follow orders to prevent the world from being falling into complete destruction.

Mirari unravels the truth about her latent powers – according to an ancient fable, she is the vessel of the Goddess of Fate, Cygnus, destined to face off against Julie, the vessel of the Goddess of Devotion, Lachess. Their fated clash becomes imminent, triggering conflicting plans among Gaven, Salathiel, and Fangbane as they strive to save Mirari and protect the world. Ultimately, Mirari loses control of her body to Cygnus, who would stop at nothing until Lachess is defeated. In a final showdown, Cygnus triumphs, vanquishing Lachess but at the cost of Mirari and Salathiel's lives. Convinced that Mirari will not return, Gaven is forced to confront and kill Cygnus.

The novel reaches its bittersweet conclusion with peace is reclaimed, albeit at a great price. Gaven embarks on a path forward, leaving behind his cherished childhood companions, Mirari and Salathiel. His uncertain future mirrors the uncertain nature of life itself. It becomes evident that the once unbreakable bond of the Knights has fractured irreparably, their reunion forever elusive, and the passage of time erases the memory of those who sacrificed their lives. The story reverberates with the sobering truth of the transient nature of human relationships, underscoring that not all connections withstand the test of time and that even the noblest endeavors eventually reach their inevitable conclusion.