In an apocalyptic future where vampires and humans are engaged in constant battle, Peter Abel Nightroad is a priest and traveling representative of the Vaticans, the human ruling authorities. Peter also works in conjunction with a secret force known as Ax, which answers to the rule of Cardinal Catherina. The outcome of the battle between good and evil, however, will depend on one young girl known as Esther. This ultimate box set contains all six volumes in the series.