Plot Analysis Summary
The film intertwines bodily transformation, scientific ambition, literary exploitation, and an unresolved struggle over what counts as truth.
Story Structure — 5 Plot Phases
Green Blood Begins
The story introduces a forest-born woman with green blood and Jae-yeon's laboratory research into synthetic green blood cells. A zebrafish mutation and laboratory contamination create scientific and professional anxiety.
Key Events
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Woman Born in Forest — A woman is shown being born in a forest as her blood gradually turns green. Characters: Jae-yeon
Location: Forest
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Synthetic Blood Research — Jae-yeon researches red blood cells altered by transplanted chlorophyll. Characters: Jae-yeon, Soo-hee
Location: Research laboratory
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Zebrafish Mutation — An injected zebrafish dies, but its body does not decompose. Characters: Jae-yeon, Soo-hee
Location: Research laboratory
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Laboratory Debate — Jae-yeon and her colleagues debate the research while practical pressure threatens the laboratory. Characters: Jae-yeon, Soo-hee
Location: Research laboratory
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Contaminated Samples — Samples become contaminated, and Jae-yeon accuses Soo-hee of taking the original research. Characters: Jae-yeon, Soo-hee
Location: Research laboratory
A Body Becoming Strange
Ji-hoon meets Jae-yeon during a personal and professional crisis. Her physical symptoms and tale of a woman turning into a tree connect her bodily change with a desire to escape the city.
Key Events
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Ji-hoon's Career Crisis — Ji-hoon faces a breakup and a plagiarism dispute with acclaimed writer Lee Chang-dae. Characters: Ji-hoon, Lee Chang-dae
Location: City
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First Encounter — Ji-hoon encounters Jae-yeon and learns that her body is undergoing alarming changes. Characters: Jae-yeon, Ji-hoon
Location: City
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Jae-yeon's Symptoms — Jae-yeon struggles to smile and move her fingers as doctors warn about poor brain blood flow. Characters: Jae-yeon, Ji-hoon
Location: Medical setting
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Tree Woman's Tale — Jae-yeon tells Ji-hoon about a woman who believes she is turning into a tree. Characters: Jae-yeon, Ji-hoon
Location: City
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Forest Escape — The tree woman survives on leaves, sunlight, and water while longing to leave the city. Characters: Jae-yeon, Ji-hoon
Location: Forest
The Ghost Writer
Ji-hoon turns Jae-yeon's experience into a story under the alias Ghost Writer. Online attention increases while the boundary between personal connection and literary exploitation becomes unclear.
Key Events
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Ghost Writer Appears — Ji-hoon writes Jae-yeon's story under the alias Ghost Writer. Characters: Ji-hoon, Jae-yeon
Location: Ji-hoon's writing space
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Online Attention — The story attracts attention online while Ji-hoon's ambitions become tied to Jae-yeon's experience. Characters: Ji-hoon, Jae-yeon
Location: City
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Research Discontinued — Jae-yeon's research is discontinued, and she retreats from the city. Characters: Jae-yeon, Soo-hee
Location: Research laboratory
The Demanded Ending
Jae-yeon's research is discontinued and she withdraws from the city. Ji-hoon refuses to complete the commissioned story, but is accused of exploiting Jae-yeon and pressured into writing a sensational ending.
Key Events
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Research Discontinued — Jae-yeon's research is discontinued, and she retreats from the city. Characters: Jae-yeon, Soo-hee
Location: Research laboratory
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Refused Ending — Ji-hoon is pressured to finish the story but refuses to write the demanded ending. Characters: Ji-hoon
Location: City
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Exploitation Accusation — Ji-hoon is accused of exploiting Jae-yeon just as Lee Chang-dae exploited another writer. Characters: Ji-hoon, Lee Chang-dae
Location: City
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Ordered Final Chapter — Ji-hoon is ordered to write that Jae-yeon keeps Professor Jung's corpse in her cellar. Characters: Ji-hoon, Jae-yeon, Professor Jung
Location: Ji-hoon's writing space
Truth Under Question
The book is marketed as a true story involving Professor Jung's corpse. Police search for Jae-yeon and question Ji-hoon, whose denial leaves the factual status of the narrative unresolved.
Key Events
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Book Marketed as Truth — The book is marketed as a shocking true story despite Ji-hoon's disputed account. Characters: Ji-hoon, Jae-yeon, Professor Jung
Location: Publishing context
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Police Search — Police search for Jae-yeon after the story links her to Professor Jung's corpse. Characters: Jae-yeon, Detective, Ji-hoon
Location: City
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Ji-hoon's Denial — Ji-hoon denies knowing the dead man and says the publisher mislabeled fiction as fact. Characters: Ji-hoon, Detective, Professor Jung
Location: Police questioning room
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Unresolved Interrogation — Detectives question Ji-hoon about Jae-yeon, leaving the truth of his account unresolved. Characters: Ji-hoon, Detective, Jae-yeon
Location: Police questioning room