In 1998, Battler Ushiromiya's younger sister Ange has lived a miserable life being raised by her Aunt Eva, the only survivor of the murders on Rokkenjima. Bullied and unhappy, Ange finds solace in the diary of her cousin Maria and the world of magic until she rejects its existence. However, with Eva's death and the inheritance of Beatrice's titles, Ange receives an offer from the witch Bernkastel on how to bring back her lost family.Meanwhile, in 1986, Battler Ushiromiya and the Golden Witch Beatrice continue their game, with Battler aided by Ange, hailing from twelve years in the future, in hopes of saving their family at last.