A few days before her coronation, Elvina summons Clarion. Though outwardly composed, Clarion dreads the possibility that the Queen has somehow found out about her relationship with Milori. When she meets with Elvina, however, she’s surprised to receive a warm welcome.

Nevertheless, Elvina soon reveals her plan to sever the magical bonds between Winter and the warm seasons via a blade powered by sunstone and starlight, forged by Petra and meant for Clarion herself to wield on the summer solstice. The Queen argues that it will permanently prevent the Nightmares from crossing the seasonal borders. The plan horrifies Clarion, but Elvina frames it as an act of security symbolizing Clarion’s new reign. Elvina justifies her choice by claiming that, long ago, the Winter Woods rebelled against Pixie Hollow. In her eyes, the whole realm is untrustworthy and maybe even corrupted by the Nightmares’ influence.

Having seen and loved Winter herself, however, Clarion refuses to accept Elvina’s assessment, arguing that Winter is just as worthy of protection as the other realms and that compassion and unity, rather than fear, must guide their actions. Elvina retorts that Clarion’s kindness is a liability and must be tempered. Furious, Clarion flees to her room. She pulls out the newly repaired coat that Petra returned to her. She clutches it to her chest, overwhelmed by the reality that she now has a deadline to deal with the Nightmares. If the prison can’t be sealed by the summer solstice, Pixie Hollow will be fractured permanently.

Clarion waits anxiously at the border between Spring and Winter, dreading the conversation she’s about to have with Milori. When he arrives, their reunion is tense, since she didn’t come back to see him before her coat was repaired. Milori, who assumed that Clarion’s absence meant that she regretted their kiss, is relieved when she confesses that she doesn’t.

Unable to put it off any longer, Clarion tells him about Elvina’s fear that the Nightmares might influence Winter fairies even while they’re awake. Milori denies this, saying he never saw anything like that. She also tells him about the solstice deadline and asks him to help her seal the prison again, as she’s convinced that they’re meant to do this together. They ride Noctua back to the frozen lake. This time, Clarion doesn’t try to control her magic but instead lets it flow naturally and successfully repairs the dream-magic barrier. Milori freezes the lake again, trapping the Nightmares beneath it.

Afterward, Milori leads her to a mountaintop to show her a statue of the first Warden, carved in ice and dedicated by the Queen of Pixie Hollow herself. The inscription honors him not as a traitor but as a hero and protector. This confirms that Elvina’s account is flawed, if not outright fabricated.

Despite their triumph and growing closeness, Clarion reminds herself that her coronation (and thus the end of her freedom) is fast approaching. As queen, she’ll be bound by duty and unable to act on her feelings for Milori. At the border, she tries to put some distance between them, citing the responsibilities that will soon divide them. Milori pushes back, arguing that their duties shouldn’t keep them apart, and invites her to a coronation ball to be held in Winter in her honor. Clarion agrees to attend, though she’s still worried about their relationship.

Though no new Nightmares appeared after Clarion and Milori sealed the prison, none of the sleeping fairies awoke either, casting doubt on the effectiveness of their efforts. As the Coronation Ball approaches, guilt and restlessness still plague Clarion, since she’s unsure if she’s done enough to deserve the crown.

As she prepares for the ball, Artemis helps her dress. In a rare moment of vulnerability, she shares the story behind her reassignment to the guard from the scouts. Years ago, she saved a friend during a battle against a hawk, but their target escaped, which led to the reassignment. Clarion reassures her that her actions were brave, not foolish. They’re interrupted by Petra, whose entrance flusters Artemis. When she hastily leaves, Clarion teases Petra about the obvious attraction between them.

At the ball, Clarion is formally introduced as the future queen but can’t shake the feeling that she doesn’t deserve the praise lavished on her. She watches as Elvina knights a group of scouts but overlooks Artemis. When Clarion is invited to address the crowd, she delivers a short speech before preparing to slip away to Winter. However, Petra quickly intercepts her. The two argue, and Petra calls out Clarion for prioritizing a relationship with Milori over her duty and sneaking away while the realm looks to her for reassurance. Clarion, already overwhelmed and hurt, pushes back, insisting that her actions are motivated by duty as much as by emotion. The argument escalates until Clarion, choking back tears, flees toward Winter.

Clarion heads for the Winter Woods, hoping to clear her head by visiting the other coronation ball. When she reaches the border, Milori greets her in full regalia as the Warden of the Winter Woods and offers to formally escort her to the ball. As they travel to the celebration on Noctua’s back, Milori assures her that their efforts to seal the Nightmares’ prison have brought peace, even if they haven’t yet broken the curse on the slumbering fairies. They discuss ongoing research in the Hall of Winter for a cure, and Clarion tentatively agrees to receive his letters after her coronation.

At the celebration, Clarion is overwhelmed by the enthusiastic reception she receives from the winter fairies, who greet her with cheers, gratitude, and handmade gifts. For the first time, she feels embraced by her people. After the rush of greetings, Milori leads her through the glowing festival booths, where Clarion samples treats and marvels at the beauty and culture of Winter. When Milori asks her to dance, Clarion hesitantly accepts. As they spin across the ice, she begins to imagine a future where warmth and connection define leadership. She hopes that maybe she doesn’t have to give Milori up.

When they return to the border, Clarion finally admits that she doesn’t want to leave. He responds in kind, and the two kiss again. However, the moment is broken when Elvina arrives.

Elvina confronts Clarion, believing her entanglement with Winter and Milori is both a distraction and a betrayal. Clarion realizes with dismay that, after their argument at the coronation ball, Petra told Elvina what was happening. Milori tries to take the blame, but Clarion refuses to let him. She defends the Winter Woods, says that everything she’s done has been in service of Pixie Hollow, and declares her independence from Elvina’s values. Petra interrupts their argument, emerging from her hiding place to point out a scout approaching from Winter. When he arrives, he announces that the Nightmares have launched an attack on the Winter festival.

Clarion immediately commits to helping, despite Elvina’s pleas to stop. She and Milori take to the skies on Noctua, flying back to the festival as a swarm of Nightmares descends. Unconscious fairies lie across the ice while scouts desperately battle the Nightmares to buy time for those still awake to evacuate. Petra and Artemis arrive soon after, both armed and ready to help. While Milori goes ahead to help with the evacuation, Clarion stays behind to talk to Petra. The tinker tells Clarion she spent most of her time working on a crossbow designed to fight Nightmares, and the starlight blade she created for Elvina doesn’t work. In addition, she apologizes for involving Elvina after their earlier fight, and Clarion accepts the apology. As the Nightmares regenerate, Clarion asks Petra and Artemis to help her reach the Hall of Winter and secure the shelter.

Clarion, Petra, and Artemis go to the Hall of Winter to find it under siege by the Nightmares. Scouts usher terrified fairies inside, while Milori, surrounded by a squad of fighters, battles the Nightmares. Clarion directs Petra and Artemis to cover her while she rushes toward the doors to help defend the Hall.

During the battle, Clarion and Milori fight back-to-back using starlight and frost magic to create a powerful but quickly waning defense. A Nightmare-bobcat mauls Artemis, and Petra is rendered unconscious by the Nightmares’ venom. Overcome with grief and fury at Petra’s loss, Clarion unleashes a massive surge of magic that illuminates the entire valley like daylight. It exposes the true, pitiful forms of the Nightmares, reducing them to ash and scattering their remains like black sand. As the surviving Nightmares flee, Clarion collapses in the snow.