The episode begins with Borgius inviting Ultimatia to join him, thereby interrupting her confrontation with Crimson. Despite Crimson's efforts, Ultimatia follows Borgius' summons. The scene shifts to Chimera, who reflects on her relationship with Snake and her knowledge of Crimson.

In a decisive turn, Snake, now separated from Chimera, confronts Borgius and launches a powerful attack intended to collapse the world. This action not only harms Borgius but also drags Crimson, Ultimatia, and the surrounding area into the chaos.

Amidst these turbulent battles, Borgius, blinded by the sun, signals to Kamui that he is Ultimatia's last protector. In response, Ike executes Borgius and advances with his allies toward Ultimatia.

Ragna's duel with Kamui escalates, leading Kamui to awaken a hidden power. After a fatal blow, Ultimatia launches a devastating counterattack. This escalation prompts Kamui to employ the combat arts of the Lightning God, decisively altering the course of the battle.

A flashback reveals Kamui's earlier encounter with Gilzea, the Monarch of Claws, showcasing a brutal exchange that ends with Kamui being beheaded—yet receiving a cryptic piece of advice.

Back in the present, Kamui's newfound strength surprises Ragna. Despite Kamui's dominance, Crimson attempts to recover and calls for help amidst the chaos.

The episode delves into Ultimatia's past, shedding light on her origins and her complex interactions with Kamui. This backstory illuminates Kamui's tumultuous history and Ultimatia's attempts to alter her fate through her abilities.

The current conflict intensifies as Kamui declares his intent to face greater enemies, while Ragna miraculously recovers, setting the stage for a dramatic showdown.

The episode concludes with Ragna unveiling her Anti-Monarch Train against Kamui, promising an epic continuation of their battle.