Galaxias is a nation ravaged by dragon invaders that destroy everything in their path. After losing his entire family in a previous rampage, Neraid Kuiper has isolated himself, taking on the duty of managing the marine signal station in what remains of the Sagittarius district. The only other person he speaks with is Neil Zeiss, a dragon scholar and former student of Neraid's late father, who carefully watches over him. One day, on his way back to the station, Neraid spots an unconscious dragon that transforms into a young girl right before his eyes. Feeling pity for the creature, he takes her into his home, fully aware that he is committing a crime by hiding a dragon. Excited by this research opportunity, Zeiss convinces the apathetic Neraid to watch over the dragon, hoping to find a way to stop these devastating attacks, even if saving Galaxias from dragons may be a hopeless endeavor.