After being killed by the demon Azmodan, the woman Seraphina defiantly refuses his demand to renounce her parents, the celestial protectors Gabriel and Elara. Azmodan strips her of her holy speech and cuts out her tongue. Meanwhile, in Radiant City, her commander father berates her for missing her sister Aurelia’s important recital. He disowns her and casts her out to die. Despite her soul being destroyed, a remnant of Seraphina's spirit unexpectedly returns to the mortal realm seven days after her death.
Seraphina finally returns home after a thousand-year banishment to the Abyss, only to find her parents doting on their adopted daughter Aurelia and ignoring her ghostly presence. Aurelia falsely tells their parents that Seraphina consorts with fallen angels and has threatened to destroy her. Based on this lie, the parents condemn Seraphina and plan to erase her from the divine genealogy. The episode ends with Seraphina discovering her own mutilated, wingless body at a purification site, realizing the true danger she faces.
At a crime scene, a commander and inquisitor find the dismembered remains of high-ranking angels. One, a young six-winged angel named Aurelia, had her wings brutally torn off and her divine core ripped out alive. The inquisitor's daughter, Seraphina, is revealed as the killer. Seraphina insists she gifted Aurelia a protective soul-warming array, not a curse, and pleads her innocence. Her mother, the chief inquisitor, denounces her as a demonic seed and orders her confinement, refusing to recognize her. Seraphina is imprisoned while the true nature of the rune remains unresolved.
Investigators discover a female Seraphim's body bearing signs of torture, dumped in a market and posing a threat of public panic. The leader, Gabriel Elara, warns his daughters Seraphina and Aurelia to stay safe, though he laments Seraphina's disobedience. At home, another person points out Seraphina once risked her life to make medicine for Gabriel's old war wound, urging him to be kinder. As they debate forcing her return via spiritual link, Seraphina reveals she is already dead, having been killed by a demon on the day of Aurelia's recital, and her corpse is present at the scene.
At a gruesome murder scene marked by strong demonic energy, a chief inquisitor determines it is merely a body disposal site. She orders her team to transport the victim’s remains for autopsy and to search for the missing body parts, including the angel's head. Her daughter, present at the scene, confronts her with deep resentment, accusing her mother of showing more warmth to a stranger's corpse than to her, and expressing disgust at her mother's work with the dead.
Seraphina is confronted by Gabriel, who accuses her of insulting their mother—a Purification Judge—and defiling her with filthy words. Her mother, Serafina, has allegedly entered, insulted her for handling dead bodies, overturned the table, and slapped Gabriel. Seraphina denies the accusations, but her father orders Gabriel to throw her out. Begging her parents to believe her innocence, she is rejected. In a final, chilling moment, she wonders if they would grieve upon discovering her corpse, imagining their divine celebration instead.
In Glowlight City, a woman named Seraphina faces humiliation from another woman and a child over a distinctive sulfur burn scar on her leg. The woman commands Seraphina to hide her 'disgusting' scar and stop frightening the child, Aurelia. Seraphina's quiet compliance is followed by a pivotal, unidentified question about whether another person, Sarafina, bore a similar scar, suggesting a deeper, ominous connection to Seraphina's past and the scar's origin.
Aurelia, a young angel, visits her mother, a law enforcement official, after her parents have been absent for three days. She expresses longing and asks them to attend her crucial Holy Chant ceremony at the Grand Cathedral. Her mother reluctantly agrees to come. Aurelia then reveals she knows about a sealed, gruesome case involving the dismembered body of an angel her age, a fact she discovered after her father warned her to be careful. Her mother, startled, asks how she learned this confidential information and urges her not to investigate further. Aurelia dismisses her concerns, claiming she fears nothing with her mother there. Her final, ominous statement reveals a deep, unresolved sorrow, hinting she may be connected to the horrific case.
In a courtroom, an official presents a crystal bearing the divine blood fingerprint and essence of a deceased person named Seraphina. Meanwhile, a young woman is taunted by another for her own crystal, which the accuser claims is inferior to her own rare one. Later, the accuser expresses a desire for Seraphina's blessing at a match, but her mother threatens Seraphina with severe punishment for non-attendance. Back in court, as the presented crystal unexpectedly lights up, the young woman pleads with her mother to look at it, hinting at a painful truth about Seraphina's fate.
A man demands to see a crystal, but his call to a woman named Seraphina is abruptly hung up, angering him. Meanwhile, Seraphina's mother and brother dismiss her, accusing her of being with fallen angels. However, Seraphina's grandmother, Elara, is alarmed that Seraphina's daily messages have stopped for a week and insists something is wrong. Seraphina's mother scoffs and ends the call, leaving Elara devastated and alone in her concern for her missing granddaughter.