In a world where humanity fled the earth's surface to escape mosters, living on large floating Arcs where genetic hierarchy dictates fate, Adam Reed, an Outcast from Arc Inferna, stumbles upon an ancient relic that grants him the Primordial Beast System. Now, enlisted in the military and facing brutal trials, he must hide his newfound power while defying a system designed to keep him weak. With enemies at every turn and evolution as his only path to survival, Adam is determined to rise beyond his limits—and become the ultimate primordial beast that will lead humanity back to the surface to claim dominion.