A team investigating the so-called Demon Cave discovers it is eerily quiet and devoid of demons, revealing that they were sealed away long ago by the late Empress using the Rosefinch Sword and a sword formation. They learn that Harvey Shawn, who claimed to be fighting demons for ten years, was actually hiding and deceiving everyone by relying on the Empress’s ancient sealing. As three powerful enemies approach, the group decides to fake defeat to claim the bodies. Meanwhile, one sealed demon begins to weaken and threatens to break free, foreshadowing a looming dangerous breakout.