The episode revolves around the fierce battle against the Emperor Dragon, who has taken possession of Gaelion's body and mind. The team, led by Naofumi, devises a strategy to save both Gaelion and Filo, whose lives are tied to the dragon's fate.

At the beginning of the episode, Naofumi and his team, which includes Raphtalia, Ren, and Sadeena, prepare for the confrontation with the Emperor Dragon. They learn that Filo's life force is rapidly dwindling due to her connection with Gaelion. Atla manages to slow the curse affecting Filo, buying them some time.

The team sets a trap away from the village to lure out the dragon and attack it from above. They discover that the dragon has an inverted scale on its chest, which is its weak point. The plan is to force the dragon to land and then pin it down to target this vulnerable spot.

During the battle, Filo's condition worsens, making their mission even more urgent. Naofumi decides to use the Wrath Shield to draw the dragon's attention. The team works together, combining their skills and magic to weaken the dragon and expose its weak point.

Wyndia plays a crucial role in this fight. She reveals that Gaelion was once her father, adding emotional depth to the confrontation. Despite her mixed feelings, Wyndia aids the team in battling the dragon.

At the climax of the episode, a dramatic showdown unfolds as the team executes their plan to defeat the Emperor Dragon. They manage to weaken it enough for Atla to launch a final, powerful attack, risking her life in the process.

The episode concludes with the team defeating the Emperor Dragon and saving both Gaelion and Filo. Wyndia bids farewell to her father, who is now free from the dragon's control.