On the border of Saint-Marco and the Loire of the Blue Griffon, a new city is being built, which should become a link between the recently hostile kingdoms. This is where the bad news comes in.... Unfortunate things happen all the time in construction, and over time, these incidents look increasingly sinister. Marc de Segur realizes that someone is trying to prevent the construction of a new royal city, and together with his friend nine-tailed fox Lee Jin Ho and faithful squire Charles goes to Lourdes to conduct a secret investigation there. On the spot, he unexpectedly meets with the Black Lord, after which the events take an even more strange and dangerous turn.