A mysterious class of individuals known as Summoners—those who command incomprehensible spirits—are despised throughout noble society. Born with this hated ability, Raibart has lived a life scorned by his parents. No matter how hard he worked, nothing was ever enough, and only his younger sister Azuria offered him comfort. However, after Azuria is attacked by bandits, Raibart is disowned by his parents for the incident. Falling into despair and collapsing on the roadside, he is taken in by Sasha, a guild employee. Freed from his oppressive past, Raibart gradually begins to awaken his true talents as a Summoner—and his story of rising from adversity begins.