Duskbound by Bree Grenwich and Parker Lennox

Here is a summary with spoilers for Duskbound by Bree Grenwich and Parker Lennox

Fia Riftborne is imprisoned in an obsidian tower in Ravenfell, the capital of Umbrathia, after being captured at the ball in Emeraal. Shesurvived by hiding in shadows and remaining emotionally detached, but now she finds herself trapped in a realm built on darkness itself. For six weeks she is isolated, terrified by the shadow magic manifesting around her eyes like black ink, and haunted by the growing realization that the power inside her may not be a curse after all. On top of it, she just wants to get back to her own world, and back to her man; Laryk. Fia’s first escape attempt fails almost immediately when she mind-controls a soldier named Effie into helping her leave, only for Aether, the feared golden-eyed Second in Command of the Umbra Spectre Unit, to stop her and carry her back to confinement. Aether reveals that she is Duskbound, a true shadow wieler tied directly to Umbrathia and its dying magic. Through Vexa, a practical Umbra soldier who slowly earns Fia’s trust, she begins learning about the Kalfar, the Void, and the desperate state of the realm around her.

As Fia is gradually allowed outside the tower, the truth about Umbrathia begins destroying everything she once believed about Sídhe and the war between their realms; and really destroying everything that Laryk has taught her. Ravenfell is starving beneath endless twilight. Refugees crowd the streets, healers cannot keep up with the sick, and weakened tethers leave even children exhausted after moments of play. Aether takes her to the ruined farming village of Croyg, where poisoned land and corrupted vegetables killed entire families, including the parents of a young recruit named Lael. Fia learns that the realm’s essence is failing, slowly draining life from the land and its people while Sídhe continues to thrive. During a confrontation on the fortress lawn, Aether forcibly injects shadows into her body, expecting resistance or destruction. Instead, the darkness settles naturally into her bones as though it had always belonged there. Moments later, a massive silver Vördr named Tryggar descends from the sky and claims her as its rider, reinforcing what everyone around her already suspects: Fia is deeply connected to Umbrathia’s future whether she accepts it or not.

Fia discovers that Duskbound were nearly eradicated centuries ago after the Umbrathian royal family turned against them. The current queen, the last known Duskbound, has descended into madness, leaving the kingdom unstable and vulnerable. Fia’s own abilities prove unusual because her essence is self-sustaining and disconnected from the land itself. To prove her worth, she is forced into the Strykka trials, where competitors display terrifying abilities including necromancy, shapeshifting, and combat magic; and the last trial she will need to face the Void. Something that will either kill or forge her. She learns that Aether was once found just outside the Void, and has no recollection of how he got to this world, and no memory of his previous world. Aether doesn’t want to talk about it all. 

Lord Valkan of Draxon emerges as one of the greatest threats during this time. His unnatural vitality, pale eyes, and army of Damphyre reveal the horrifying cost of survival in Draxon, where followers willingly allow their blood and essence to be consumed in exchange for security and food. During the trials, Fia initially suffers humiliation when Urkin rigs her combat match against a stronger opponent, but she later shocks the arena by fully unleashing her power. Rising into the air surrounded by pearlescent tendrils, she mentally seizes control of multiple Sentinels at once and turns their weapons against one another without speaking a single command. The display terrifies the crowd, fascinates Valkan, and leaves Aether watching her with open pride.

At a celebration with the Spectre Unit, Fia’s understanding of her past completely collapses. Vexa and the others reveal the truth about Riftdremar, the homeland whose destruction defined Fia’s entire life. Sídhe did not destroy the continent because of rebellion or cultural unrest. The kingdom burned Riftdremar after years of secretly mining arcanite there, exploiting its resources until the people resisted. The Riftborne branding forced onto Fia as a child was propaganda designed to justify colonial theft and mass destruction. Horrified, Fia realizes she was manipulated into serving the very Guard responsible for destroying her home and killing countless innocent people. The revelation destroys her remaining loyalty to Sídhe and forces her to reevaluate everything she believed about herself, her identity, and the war.

The final trial requires Fia to enter the Void, an ancient living darkness capable of either killing or transforming those who enter it. Inside, the Void strips her down to her deepest fears and insecurities. She sees visions of her loved ones dying because of her power, Ma recoiling from her in horror, and Laryk confessing that he values her only as a weapon. The Void offers her unlimited power if she surrenders her identity, memories, and free will. Fia nearly accepts before remembering Aether’s insistence that survival sometimes means choosing to fight even when surrender seems easier. Instead of giving in, she bargains with the darkness to save Lael, who is dying within the Void itself. She emerges alive and transformed, wreathed in living shadow as a true Duskbound. At the same time, Valkan also survives the Void, confirming him as an even greater threat.

As Fia begins embracing her role among the Umbra, her relationship with Aether deepens. Though both spent years emotionally detached and hiding behind violence or survival, they slowly begin tearing down each other’s walls. Together they search for an alternative to war and uncover evidence of a siphon, a person capable of stealing and redirecting essence itself. Their investigation leads them through archives, forbidden histories, and eventually to the Dread Sirens, cave-dwelling entities capable of speaking through the dead. There they learn the siphon is not an object but a living person. Fia and Aether conclude the King of Sídhe is responsible for draining Umbrathia’s essence. Before they can act on the discovery, Valkan captures Fia by disguising himself as Aether. Imprisoned in Draxon, she is tortured and repeatedly drained of her self-sustaining essence while Valkan plans to use her as an eternal source of power. Aether, imprisoned separately and tortured himself, escapes and unleashes devastating abilities during a brutal rescue that leaves Draxon covered in blood. 

After escaping Draxon, Aether finally confirms what he long suspected about Fia’s lineage. Archive records reveal she is the daughter of Prince Andrial Valtýr, the supposedly dead son of Queen Andrid. Decades earlier, Andrial chose to remain in Riftdremar with the woman he loved instead of abandoning the continent as it burned. This makes Fia heir to the Umbrathian throne. Hoping to find answers, the group travels through the rip into Riftdremar expecting ruins, only to discover a land reclaimed by nature after decades without interference. Deep within abandoned mines, they find surviving veins of arcanite. When Fia channels her unique self-sustaining essence into the crystals, the arcanite reignites with brilliant light for the first time in years, proving the land can heal. Realizing the truth must be exposed within Sídhe itself, Fia decides to remain there and build alliances rather than immediately return to Umbrathia. During their time together on the coast of Riftdremar, the tension between her and Aether finally breaks, and they kiss for the first time.

Fia and Aether reconnect with survivors from her old life, including Osta, Eron, and Ma, while the Soleil family reveals they have secretly built a resistance movement against the Sídhe crown. Fia learns the resistance has been creating gaps in Guard patrols to aid Umbra movements, and they hope to recruit General Laryk as well. Returning to Luminaria, Fia reunites emotionally with Ma and reveals the truth about the dying realm, the stolen essence, and her heritage. Ma immediately agrees to help by supplying healing potions to Umbrathia and secretly weakening the Guard’s breathing tonics from inside Sídhe. Fia and Aether also infiltrate the Guard Compound and sabotage the magical blood oaths preventing soldiers from speaking openly about their duties. Once the oaths fail, the truth about the war will begin spreading uncontrollably through the ranks.

Fia later confronts Laryk directly. Their meeting turns violent when Narissa attacks her first, leaving acid burns across Fia’s body before being mentally subdued. When Laryk arrives, he kisses Fia, but she no longer returns his feelings. She explains the truth about arcanite, siphons, and Umbrathia’s collapse, eventually convincing him to quietly spread rebellion within the Guard from the inside. Though deeply hostile toward Aether, Laryk reluctantly agrees to the alliance. Back in Ravenfell, the arcanite Fia restored begins healing the land itself. Green grass and crimson spider-lilies bloom where dead earth once existed, giving the starving realm its first real sign of hope in years. Vexa gifts Fia twin daggers bonded specifically to her shadows and mind-web, symbolizing her acceptance of both light and darkness, while Aether kneels before her and formally swears his life and loyalty to her rather than to any throne.

Through the eyes of a royal guard in Sídhe, Fia witnesses the King murdered and Ma dragged forward to be executed for poisoning him. The woman sitting on the throne is not the queen Fia expected, but Vilda Valtýr, the supposedly dead twin sister of Umbrathia’s queen. Vilda has secretly impersonated Sídhe’s ruler for years and is revealed as the true siphon draining Umbrathia’s essence. Her deception has manipulated both realms into collapse and war. As Laryk appears carrying a bloodied sword and chaos erupts across the kingdom, Fia awakens from the vision consumed by shadow and fury. Realizing both realms are on the brink of destruction, she declares war.