Lina Inverse and Gourry Gabriev reunite with their old friends Zelgadis Graywords and Princess Ameilia Wil Tesla Saillune in the realm of Xoana. Together, they thwart the evil intentions of the kingdom's ruler and his daughter bent on world domination. Zelgadis, driven by the desire to regain his human form, seeks the fabled Claire Bible for answers hidden within its ancient pages. Despite initial reluctance, the group embarks on this quest at Zelgadis' side. As they ponder their next move, a cryptic priest named Xellos emerges, offering his enigmatic assistance in their journey.