When an ancient secret awakens beneath Vianden Castle, Luxembourg’s future finds its guardian.

Lucien Becker was never meant to be a hero. A quiet historian obsessed with old maps and forgotten archives, he uncovered a hidden chamber beneath Vianden Castle – and with it, an alien artifact known as the Aetherial Core. In a breath of blinding light, the Core bonded to him, rewriting his body, his senses, and his destiny. Now, as Captain Luxembourg, Lucien must stand between a peaceful nation and forces that have waited centuries to strike.