At Cluster Edge Academy, the elite offspring gather to prepare for their future as leaders in a society governed by artificial soldiers and religious factions vying for power. Unsurprisingly, the academy's newest student, Agate Fluorite, struggles to conform to this rigid environment. His enthusiasm sets him apart from his dreary and disengaged peers, but there is something else about him that even the most unflappable top students, such as Beryl Jasper, notice. Agate has become entangled in a series of mysteries that he cannot unravel, which suggests that something significant and dangerous is threatening the foundation of Cluster Edge Academy.