A man with dissociative amnesia reconstructs the murder he committed and confronts the survivor seeking revenge.
Story Structure — 5 Plot Phases
The Brother Who Returned
Jin-seok enters a new home and witnesses his brother's abduction. When Yoo-seok returns after nineteen days, his strange behavior creates an atmosphere of suspicion.
Key Events
Move Into the New Home — Jin-seok moves into a new home with his parents and older brother. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The new family home
Restricted Room — The brothers are forbidden from entering a room containing the previous owner's belongings. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The locked room
Abduction in the Rain — Jin-seok witnesses Yoo-seok being dragged into a car during a rainy night. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: Outside the house
Nineteen-Day Return — Yoo-seok returns after nineteen days and claims to remember nothing. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The family home
A Missing Twenty Years
Jin-seok investigates the apparent impostor and seeks help from the police. Modern technology forces him to confront the fact that his memories have skipped twenty years.
Key Events
Suspicious Behavior — Jin-seok notices personality discrepancies and suspects Yoo-seok is an impostor. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The family home
Flight to the Police — Jin-seok flees the house, but officers dismiss his account as insanity. Characters: Jin-seokLocation: Police station
Twenty Years Lost — Modern devices reveal that Jin-seok is actually forty-one in 2017, not twenty-one in 1997. Characters: Jin-seokLocation: Police station
Crime Scene Revealed — Jin-seok enters the forbidden room and finds a depiction of a murder scene. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The restricted room
The House of Revenge
The forbidden room exposes a murder scene and Choi's substitution of the real Yoo-seok. Choi explains that Jin-seok was identified as the killer of his family.
Key Events
Crime Scene Revealed — Jin-seok enters the forbidden room and finds a depiction of a murder scene. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The restricted room
The Replacement Exposed — Choi reveals that he replaced the real Yoo-seok after the abduction. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The restricted room
Cold Case Revenge — Choi explains that his family was murdered there and that Jin-seok was identified as the killer. Characters: Jin-seok, Yoo-seok / Choi Seong-uk, GirlLocation: The restricted room
Hypnosis Plan — A psychiatrist proposes reenacting the murder to recover Jin-seok's repressed memories. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The staged family home
Murder Scene Reenactment — Choi stages the old household roles and prepares to recreate the murder during rain. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The restricted room
Memory Under Pursuit
A psychiatrist designs a reenactment to recover Jin-seok's memories, but the plan is disrupted by Choi's arrest. The escape and vehicle crash bring Jin-seok to the hospital, where his memories return.
Key Events
Choi Is Arrested — Choi is unexpectedly arrested for assault and fraud before the reenactment can conclude. Characters: Yoo-seok / Choi Seong-ukLocation: Outside the staged home
Escape and Van Pursuit — Jin-seok escapes, and Choi pursues him in a van. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The road
Crash and Hospitalization — Choi crashes the van, Jin-seok is struck by a car, and both are connected to the hospital aftermath. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The road and hospital
Memories Return — After waking in the hospital, Jin-seok remembers the events of 1997. Characters: Jin-seokLocation: Hospital
The Sin Beneath Memory
Jin-seok remembers the financial pressure, the hired murder, and the deaths of the Girl and her mother. In the present, he and Choi face the truth and both choose death.
Key Events
Family Car Accident — Jin-seok's parents die in a car accident, while Yoo-seok is mortally injured. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: A river and nearby road
Hired Murder Offer — Unable to fund Yoo-seok's surgery, Jin-seok accepts an anonymous offer to kill a mother. Characters: Jin-seokLocation: Jin-seok's living space
Girl Dies at the Door — The Girl sees Jin-seok's knife and is accidentally stabbed while trying to shut her door. Characters: Jin-seok, GirlLocation: The doctor's house
Mother Is Murdered — After seeing the blood and hearing screams, Jin-seok kills the Girl's mother. Characters: Jin-seokLocation: The doctor's house
The Doctor Falls — Jin-seok discovers the doctor arranged the killing for insurance money; the doctor dies during their struggle. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The doctor's house
Choi's Final Question — Choi tries to poison Jin-seok and asks why he was spared; Jin-seok claims full responsibility. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: Hospital
Two Suicides — Jin-seok poisons himself, while Choi dies by suicide after jumping from the hospital window. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: Hospital
Peace at the River — A remembered child offers Jin-seok a lollipop, and Jin-seok peacefully watches the family walk away. Characters: Jin-seok, Yoo-seok / Choi Seong-ukLocation: The river
Story Breakdown
New House Mystery — Jin-seok's family moves into a home containing a forbidden room and an unexplained history.
Forbidden Room — The brothers are warned not to enter the room containing the previous owner's belongings.
Rainy Abduction — Jin-seok witnesses Yoo-seok being kidnapped outside during the rain.
Impostor Brother — Yoo-seok returns with no memory, while Jin-seok detects disturbing changes in his behavior.
Personality Discrepancies — Jin-seok suspects that the returning man is not his real brother.
Medication Explanation — Yoo-seok attributes his unusual behavior to not taking barbital medication.
Lost Twenty Years — Jin-seok's investigation reveals that his perception of time and identity is profoundly damaged.
Police Rejection — Officers dismiss Jin-seok's account and assume that he is not sane.
Modern World Proof — A smartphone, tablet, and television reveal that the year is 2017.
Choi's Revenge — The forbidden room reveals a murder scene and the returning brother's true identity.
Identity Substitution — Choi explains that he replaced the real Yoo-seok after the abduction.
Cold Case Accusation — Choi identifies Jin-seok as the killer of his family twenty years earlier.
Staged Memory Trial — Choi and a psychiatrist attempt to recreate the murder so Jin-seok can recover his past.
Hypnotic Reenactment — The restricted room is prepared as a recreation of the 1997 murder scene.
Interrupted Scheme — Choi's arrest for assault and fraud delays the planned rainy-night conclusion.
The Buried Crime — Jin-seok's recovered memories reveal how financial desperation led to the murders.
Failed Surgery Funding — The 1997 financial crisis leaves Jin-seok unable to pay for Yoo-seok's surgery.
Accidental Murders — Jin-seok accidentally kills the Girl and then murders her mother to stop the screams.
Mutual Destruction — The truth becomes unbearable for both men, ending their revenge cycle through suicide.
Full Responsibility — Jin-seok admits responsibility and refuses to preserve a comforting version of his innocence.
Final Farewell — Jin-seok poisons himself, Choi jumps from the hospital window, and the river memory ends peacefully.
Jin-seok, 21-year-old, moves into a new house with his family. He suffers from a slight schizophrenia but he carries an ordinary life under the warm care of the family. His older brother Yu-seok is a decent college student, a mentor, and role model for Jin-seok. One night, his beloved brother is kidnapped by unidentified assailants before Jin-seok's eye. Jin-seok can’t recognize their faces, but can remember only the VIN that matches with no car. After long silence of 19 days, suddenly Yu-seok returns home, but remembers nothing which had happened in the meantime. And soon Jin-seok feels Yu-seok is a total stranger.
