Every individual is born with a soul, and its predetermined plan dictates ninety percent of their life. Those who deviate from this destined path—whether due to an unfortunate accident or an unplanned murder—leave behind a shattered "psycholith," a rock that manifests their soul. When these fragments are abandoned, they stain the environment, eventually forming "negative points." These locations disrupt a soul's plan, triggering a vicious cycle of misfortune. The principled Sakurai and the apathetic Amano are a pair of specialists charged with ensuring souls adhere to their natural trajectories. To achieve this, as members of Psycholith Collection & Cleaning, they gather and dispose of shattered psycholiths while cleaning up the resulting stains. However, their duties have a morally ambiguous side: they must also prevent psycholiths from shattering, even if this requires killing the soul's host.