The episode begins with Atou's feedback to Takuto about her victory against Ice Rock, one of the Four Generals of the Demon King, in Dragontan. But her triumphant message is abruptly interrupted when she realizes that enemy forces have infiltrated Mynoghra itself. Simultaneously, the Demon King himself enters the Cursed Forest and admires its unique atmosphere, posing an immediate threat to the heartland.

Takuto, immediately informed of the invasion through his connection to his territory, promptly initiates countermeasures. He coordinates the evacuation of non-combatant citizens through Emle and orders the defense of the capital by Gia and the Dark Elf warriors. Isla, as the defense hero, presents the available troops: the Dark Elf warriors, the three Brain Eaters with healing powers, and the larvae she gave birth to, which are intended for labor but can also fight if necessary.

Reconnaissance reveals that about a thousand enemies – including Goblins, Orcs, and unknown creatures – have invaded the Cursed Land. Takuto, recognizing the superiority of 4X game units over RPG characters, decides to take a gambit: He transfers all of Mynoghra's mana reserves to Isla to massively increase her level and acquire the abilities "Predation" and "Parasitic Eggs". With this power, she is to overwhelm the invaders.

Isla confronts Flamin, the Flame Demon and another General of the Demon King. During the battle, a philosophical conflict is revealed: Flamin, who feels like a puppet of his RPG-imposed role, expresses his anger and envy of Isla's free, loyally devoted service to Takuto. His motive for the attack is the desire to fight for his own freedom by defeating them. Isla, unimpressed, reaffirms her free loyalty to Takuto and ultimately defeats him.

Immediately after the victory, a disturbing and inexplicable incident occurs: The twins Maria and Caria are suddenly teleported from the palace to Isla's side on the battlefield, and a communication disruption cuts off the connection to Takuto. The episode ends with this unsettling cliffhanger, forcing Isla into a protective position and leaving the cause and immediate consequences of this mysterious event open.