In a world where Classes are bestowed by the gods upon everyone when they reach eighteen, the existence of Skills within these Classes tends to overshadow any hard work, setting one’s life path. Within this imbalanced system, Lythe, who trained in hopes of becoming a Holy Knight, was heartlessly classified as Jobless during the Class assignment, resulting in his expulsion from the town by his father, the Duke. As he scraped by as a luggage boy, there came a day when the merchant caravan he was with got attacked by bandits. Lythe, attempting to save the child, engaged in a battle with the skillful attackers, accepting his impending death. Yet, a mysterious voice echoed in his head when he punched a bandit in his last act of defiance…

18歳になると神から「クラス」が与えられる世界。クラスの持つ「スキル」の有無は、どんな努力をも上回り、どんなクラスかでその後の人生が決まってしまう。そんな不平等な世界で、聖騎士を目指し訓練してきたリートは、クラス分けで無情にも<無職>を言い渡され、父親である公爵の手により、街を追放されてしまう。そして荷物持ちで糊口をしのいでいたある日、商隊が盗賊に襲われる。子どもを救うため戦うが、戦闘スキル持ちに敵うはずもなくリートは死を覚悟する。しかし、最後の抵抗で盗賊を殴った瞬間、頭の中に不思議な声が鳴り響き…。