A naked woman awakens in an unknown, seemingly deserted town, having no memory of her name or past. Suddenly, words mysteriously manifest on her hands, revealing her identity: Agarta, the "Devourer of Dragons." Confused, Agarta investigates her surroundings, hoping to uncover the truth. During her journey, Agarta encounters a grotesque creature that relentlessly pursues her. Just as she is on the verge of losing all hope, she hears a strangely familiar voice urging her not to run. To end her suffering, Agarta must summon the courage to face the monster, as doing so might lead her to the missing piece of this mystery.