世界被四大公爵家族所掌控着,奥兹(皆川纯子 配音)是萨流士家的下一任当家,然而,在十五岁成人仪式上,他却因为“存在”这种莫名其妙的理由被定罪,之后被投入了永远不得超生的阿鬼茨监狱之中。在监狱里,奥兹遇见了被称为“染血黑兔”的艾莉丝(小野大辅 配音),在艾莉丝的帮助之下,奥兹成功的逃出了监狱,并意外的回到了十年之前。 重新获得自由之后,奥兹决定查明整个事件的真相,揪出想要抹杀他存在的幕后真凶。在此过程中,艾莉丝在奥兹的帮助之下亦试图寻回他失落的记忆。两人来到了传说中的禁忌之地,究竟有怎样的秘密隐藏在那里呢?Oz Vessalius, heir to one of the duke houses, has just turned fifteen. His life is rich and carefree, darkened only by the constant absence of his father. At his coming-of-age ceremony, however, everything changes. For no reason that he can discern, he's cast into the prison known as the "Abyss", only to be saved by a "chain" known as Alice, the bloodstained black rabbit. Why was he cast into Abyss, how does Alice factor into it all, and what does the organization known as "Pandora" want with him.