Plot Analysis Summary
The single-season narrative follows Kang Bit-na from possession and infernal punishment through a killer investigation, a power crisis, a final trial, and an unresolved descent into Hell.
Story Structure — 5 Plot Phases
Season 1: Infernal Assignment
Kang Bit-na's body is possessed by an infernal entity with a mission to punish criminals. The first trials establish the dark rules governing the story.
Key Events
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Possession of the Judge — An infernal entity possesses the body of Judge Kang Bit-na and must punish criminals while living as a judge on Earth. Characters: Kang Bit-na
Location: Earth
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Unexpected News — Da-on receives unexpected news while protecting Min-jeong, while Kang Bit-na's first infernal trial begins. Characters: Kang Bit-na
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First Infernal Trial — Kang Bit-na begins an infernal trial as part of her mission to punish criminals. Characters: Kang Bit-na
Season 1: Punishment Escalates
Kang Bit-na continues her infernal trials while a secret demons meeting and a horrific incident broaden the danger. Questions about interference and identity increase the tension.
Key Events
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String of Executions — Kang Bit-na revels in a string of executions before encountering someone unexpected. Characters: Kang Bit-na
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Bad Adults Punished — Kang Bit-na's infernal trial for Bae Jayeong's misdeeds begins under the principle that bad adults must be punished. Characters: Kang Bit-na
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Secret Demons Meeting — Da-on trails Kang Bit-na and discovers a secret meeting involving demons. A horrific incident then occurs. Characters: Kang Bit-na
Location: A secret meeting place
Season 1: The Killer Returns
The suspected return of serial killer J creates a parallel threat. Disappearance, suspicion, and another completed infernal trial push the investigation into a more personal phase.
Key Events
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Interference Questioned — Kang Bit-na faces the question of why her actions are being interfered with as she attempts to escape scrutiny and conclude her infernal trial. Characters: Kang Bit-na
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Suspicion Returns — Suspicion arises that a serial killer known as J has returned, while Da-on remains suspicious of Kang Bit-na's identity. Characters: Kang Bit-na
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Disappearance and Trial — So-young disappears. Kang Bit-na worries for Da-on but concludes Choi Won-joong's infernal trial as a demon. Characters: Kang Bit-na
Season 1: Alliance and Revelation
A revenge vow brings Kang Bit-na into a joint pursuit of J. The killer's identity is uncovered, while Kang Bit-na experiences unwanted emotions and loses her powers after breaking the rules.
Key Events
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Vow of Revenge — Da-on vows revenge against the serial killer known as J and joins forces with Kang Bit-na. Characters: Kang Bit-na
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Identity Uncovered — The true identity of Detective J is uncovered, and Kang Bit-na encounters emotions she has never wanted to face. Characters: Kang Bit-na
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Loss of Powers — Kang Bit-na loses her powers for breaking the rules but still goes to Jae-geol's home to uncover the identity of J. Characters: Kang Bit-na
Location: Jae-geol's home
Season 1: Trial and Hell
A burned-car discovery reveals the truth and the trial of J finally begins. The story reaches a life-or-death choice before J escapes and Kang Bit-na is dragged to Hell.
Key Events
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Burned Car Revelation — A body is found in a burned car, and the truth about the case is revealed. Characters: Kang Bit-na
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The Final Trial Begins — The trial of J finally begins, forcing Kang Bit-na to face a life-or-death choice. Characters: Kang Bit-na
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Dragged to Hell — After J commits another evil act and escapes, Kang Bit-na is dragged to Hell, leaving her fate uncertain. Characters: Kang Bit-na
Location: Hell
