At the beginning of the episode, Selia recalls her father's words about the duties of House Crystalia and a fairy tale about the Demon Prince. Meanwhile, the scene is disrupted by a powerful magical attack from Nefakess Reizaad, a follower of the Lord of the Underworld, leading to a confrontation with undead soldiers summoned by Leo.

Together with the summoned undead warriors, Leo and Selia engage in a fierce battle against Nefakess. Despite the intensity of the fight, Leo manages to withstand Nefakess's powerful assaults. The undead reveal themselves as the heroic Three Warriors of Rognas and vow to protect Selia and Leo.

The episode takes a dramatic turn when Nefakess reveals that the Goddess has risen and that the Holy Tearis, one of the Six Heroes, played a role in it. He hints that the world is destined to crumble under the power of the Goddess, leaving the characters in shock and confusion.

As the team grapples with this revelation, they encounter the Void Lord, who turns out to be the Holy Tearis Ressurrectia, transformed into a powerful entity. The team realizes they must defeat the Void Lord to prevent a catastrophe.

The episode culminates in a fierce battle against the Void Lord. Leo recognizes the gravity of the situation and decides to cast a powerful Tier 11 spell, Io Nemesis, to defeat the Void Lord. However, the Void Lord resists the attack, leaving the team in a desperate situation.

Amid the chaos, Leo is tormented by the memory of a promise he made to Roselia, the former Goddess: to kill her with his demonic sword should she ever transform into something else. Torn between duty and emotion, Leo struggles to make a decision.

The episode ends on a cliffhanger: Leo and Selia find themselves in a critical situation, facing the overwhelming power of the Void Lord.