In the Victorian imperial capital where steam and magic energy intersect, a case of dismemberment of a nobleman with a mysterious motive draws the new criminal police captain Renne into the center of the whirlpool. No one knows that this withdrawn police detective due to childhood trauma hides a fatal secret - he can see the "scars of crime" left in reality by extreme emotions that no one can see.
Rage can turn into burning flames, jealousy can breed poisonous ivy that corrodes everything, and extreme sadness can turn into icy mist that never dissipates. As a series of cases followed, Lane gradually realized that what he was hunting were not ordinary criminals, but a group of "emotional magicians" who could turn emotions into physical disasters.
At the same time, a mysterious organization called the "Garden of Nightmare" is quietly operating, and they are planning a "tide of despair" that can flood the entire imperial capital. Renn must race against time to uncover the truth before his sanity is swallowed up by the countless negative emotions he witnesses. However, the ultimate enemy may be the deepest despair bred by this era itself.
What he faced was not only a vicious criminal, but also a game between good and evil about "emotion" itself. When the madness of the world is clearly revealed in his eyes, can he hold on to the last line of defense in his heart?
