Story Structure — 4 Plot Phases
The Island Case Revisited
BJ Yagwang revisits the Bija Island disappearance and challenges the supernatural explanation for the shaman's discovery. He argues that human motives or ordinary investigation may explain what happened.
Key Events
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Glow World Rebroadcast — BJ Yagwang revisits a notorious case that embarrassed the Korean police. Characters: BJ Yagwang
Location: Glow World broadcast
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The Granddaughter Goes Missing — An elderly man with dementia returns from fishing without his granddaughter.
Location: Bija Island
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Villagers Assume Drowning — Unable to get an explanation, villagers assume the girl fell overboard and drowned.
Location: Bija Island
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The Shaman Finds the Body — After villagers collect money for a ritual, a shaman leads them to the girl's body.
Location: Bija Island
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Yagwang Challenges the Supernatural — He argues the discovery may reflect greed, incompetence, or investigation rather than spiritual power. Characters: BJ Yagwang
Location: Glow World broadcast
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Fake Possession Demonstration — Yagwang demonstrates how easily someone can perform a fake possession. Characters: BJ Yagwang
Location: Glow World broadcast
Following Sun-Young's Trail
Yagwang and PD Park pursue rumors linking Sun-Young to Hye-jin's disappearance. Their visit to Chamgil Dormitory and discovery in room 510 make the case seem more serious than an internet rumor.
Key Events
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Fake Possession Demonstration — Yagwang demonstrates how easily someone can perform a fake possession. Characters: BJ Yagwang
Location: Glow World broadcast
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New Leads for the Program — Yagwang and PD Park pursue leads about Sun-Young and Hye-jin's disappearance. Characters: BJ Yagwang, PD Park
Location: Online program investigation
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Rumors About Sun-Young — They pursue rumors alleging Sun-Young was connected to Hye-jin's disappearance and possible murder. Characters: BJ Yagwang, PD Park, Sun-Young, Hye-jin
Location: Investigation
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Search Near the Library — They follow a report that Sun-Young may have been living near a library. Characters: BJ Yagwang, PD Park
Location: Near a library
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Caretaker's Account — The caretaker recalls seeing Sun-Young but says she probably did not sleep there. Characters: BJ Yagwang, PD Park
Location: Chamgil Dormitory
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Room 510 Discovery — They find a disturbing space marked by signs that someone desperately tried to survive. Characters: BJ Yagwang, PD Park
Location: Room 510, Chamgil Dormitory
The Audience's Challenge
Viewers choose A+ Library as the team's next destination. An anonymous donation challenge gives Yagwang a reason to search for a doll connected to an incident two years earlier.
Key Events
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Viewers Choose the Destination — The team asks viewers to vote, and an overwhelming majority chooses A+ Library. Characters: BJ Yagwang, PD Park
Location: Online program
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Anonymous Balloon Challenge — An anonymous viewer offers many balloons if Yagwang finds a doll tied to an incident two years earlier. Characters: BJ Yagwang, PD Park
Location: Online program
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Yagwang Accepts the Challenge — Seeking the reward and a revival for the show, Yagwang accepts the challenge. Characters: BJ Yagwang, PD Park
Location: Online program
Inside A+ Library
Yagwang and PD Park enter the abandoned library and encounter decay, strange noises, and unexplained movement. Ordinary explanations provide brief relief, but the livestream warnings and Yagwang's injury leave the search unresolved.
Key Events
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Arrival at A+ Library — The investigators enter the abandoned location to search for the missing doll. Characters: BJ Yagwang, PD Park
Location: Abandoned A+ Library
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Decay Inside the Library — They encounter foul odors, standing water, mold, and broken fixtures. Characters: BJ Yagwang, PD Park
Location: A+ Library
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Noises and Sudden Movement — Strange noises and unexplained movement unsettle the investigators. Characters: BJ Yagwang, PD Park
Location: A+ Library
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Ordinary Explanations Startle Them — A cat and other ordinary explanations startle them while viewers warn of movement behind Yagwang. Characters: BJ Yagwang, PD Park
Location: A+ Library
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Search in the Study Room — Yagwang searches the girls' study room for the doll amid worsening decay. Characters: BJ Yagwang, PD Park
Location: Girls' study room, A+ Library
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Injury and Unresolved Search — Yagwang injures himself on a damaged object, and the team remains inside with the search unresolved. Characters: BJ Yagwang, PD Park
Location: A+ Library