At the beginning of the episode, Roxy challenges Fate to a duel due to his involvement in numerous violent incidents. Although Fate hesitates, the duel showcases Roxy's impressive skills and Fate's unique abilities, including the use of a special scabbard that enhances his sword techniques. Roxy's interrogation leads to a discussion about Sir Aaron, a famous swordsman, and Fate's possible connection to him.

Mugan and Fate discuss the Chimera, an artificial monster that hints at a deeper conspiracy involving advanced technology. Meanwhile, Raine and a colleague talk about Rafale, the heir of the Vlericks, and his obsession with the Philosopher's Stone, a powerful artifact with mind-control capabilities.

Fate learns about Domain E, a level of power necessary to combat terrifying foes like the Divine Dragon. The episode then shifts to a massive stampede known as the Death March, which threatens the region. Roxy and her troops are mobilized to confront this challenge.

Fate and Greed encounter the Omega Slime, a fearsome enemy capable of endless replication. Fate uses his ability, Greed, to amplify his attacks, but the slime's ability to split and continue attacking poses a significant challenge.

Fate meets a mysterious figure wielding the Black Sword Envy. This encounter reveals the figure's connection to the Omega Slime and hints at a larger, darker conspiracy. Fate's battle against this adversary pushes him to his limits, forcing him to use the ability Gluttony to gain an advantage.

In a race against time, Fate tries to stop the Divine Dragon, controlled by Northern, from attacking Roxy. Northern uses a flute to command the dragon, while Fate fights through a wall of slime to reach Roxy.

Finally, a dramatic reunion occurs between Fate and Roxy, with Roxy recognizing Fate as "Fay."