In the world of Lumen, a land of diverse luminants and warring factions beset by monstrous threats, a daring trio sets out to uncover its secrets. Kounéli Atsáli, Velvet Isabella, and Leonardo Zeshi are explorers driven by curiosity and a shared desire to unite the fragmented world. As they journey through perilous territories and confront ancient evils, their bond is tested, revealing hidden truths about themselves and the light and darkness that shape Lumen's fate.