A routine flight on the airship "Tristian," turns into a nightmare when hi-jacked by a vampire, Aflred, who belongs to a radical vampire group known as Fleurs du Mal. After making a threat to the Vatican (by dropping the Tristian if his comrades were not released from Vatican custody), Alfred believes that things are going according to plan...until he meets Abel Nightroad, a traveling priest from the Vatican. Little does Alfred know that Abel is not like any ordinary priest.
A meeting turns deadly for the terrorist group Fleurs du Mal. Abel accompanied by an android, Tres Iqus, are sent to investigate, but end up discovering a young girl who possesses a great power. Now it's up to Abel and Tres to determine what she is and why was she in the custody of Fleurs du Mal.
Once more Abel(accompanied by Noelle Bor)is sent to Barcelona to investigate the collapse of a building known as the National Palace. Inspired by the sights and sounds of Barcelona, Noelle attempts to express her feelings for Abel. In spite of her feelings, Noelle and Abel continue their investigation, only uncover some strange findings. But little do they know that destruction begins at the tone of the bell.
While Esther recovers from her injuries with the help of the mysterious child Seth, Ion is stunned to find himself face to face with the supposedly dead Radu, who challenges him to stop him from killing the Empress.