You watch this show for the core concept alone: humans with harvested fairy organs turning into living weapons, now abandoned by the state they bled for. The execution is messy enough that it loses people in episode three, but if you stick past that, the worldbuilding pulls you back in. By the end you're watching ex-soldiers figure out who they are when war stops needing them, and that's where it actually lands.

Maria enters a world still fractured by conflict. Nine years have passed since the war ended, but peace remains fragile. Fairies inhabit animals, and through surgical extraction, humans can graft these creatures' organs into their own bodies to access otherworldly power. During the war, these augmented soldiers became weapons. With the fighting over, they lost their purpose and went separate ways: some took government work, some joined the mafia, and some became terrorists. Maria is a new recruit at Dorothea, a government agency that investigates and suppresses crimes involving fairies. The political situation is unstable, and criminals scarred by the war are carrying out acts of revenge. Maria partners with Free Underbar, a veteran fairy soldier in Dorothea, hoping to find Veronica Thorn, the childhood friend she lost long ago, who now works as an illegal fairy soldier for a mysterious group. Their story is an action fantasy about fairy soldiers pursuing their own sense of justice in a chaotic postwar land.