In a city where spirits secretly walk among humans, Requiem, a spirit hunter, runs a shop to help establish balance between the spirit and human realms. Cadence Cash, a recent college graduate with the rare ability to see spirits, stumbles upon Requiem's business by chance and becomes his assistant.

Together, in "Final Chord", they confront malevolent spirits, help lost souls, and unravel hidden truths. As Cadence faces her fears and unresolved family issues, she must navigate the thin line between the living and the dead while seeking answers about her own mysterious past.