Only the River Flows (2023) — AI Story Visualization

Plot Analysis Summary

A murder investigation becomes an unresolved psychological and institutional struggle over missing evidence, ambiguous clues, and the truth behind the river killing.

Story Structure — 4 Plot Phases

A Murder by the Water

The police move into a closed cinema before Granny Four is found murdered near the river. Damaged evidence and the Madman's disappearance make the first investigation uncertain.

Key Events

• Bureau Prepares to Move — The police prepare to move into a closed cinema in 1995. Characters: Ma Zhe, Chief of Police Location: Peishui City criminal investigation bureau
• Chief Addresses the Team — The Chief urges the team to maintain morale and keep an open mind. Characters: Chief of Police, Ma Zhe Location: Peishui City criminal investigation bureau
• New Office Established — Lieutenant Yan helps establish the new office before the murder investigation begins. Characters: Ma Zhe, Chief of Police Location: Closed cinema
• Body Found Near River — Granny Four is found murdered near the river. Characters: Ma Zhe, Granny Four Location: Riverbank
• Victim's Background Examined — The investigation establishes Granny Four's isolation and her adoption of the Madman. Characters: Ma Zhe, Granny Four, Madman Location: Riverbank
• Evidence Is Compromised — Rain damages footprints, and police dogs cannot identify a scent. Characters: Ma Zhe Location: Riverbank
• Madman Disappears — The Madman is missing, making him central to the continuing search. Characters: Ma Zhe, Madman, Chief of Police Location: Peishui City

Voices Along the Railway

Recordings connected to Wang Hong introduce intimate messages and an unclear secret. Ma Zhe maps the railway and discovers that its reach across three provinces complicates the search.

Key Events

• Search for the Madman — Ma Zhe searches for the missing Madman while pursuing the murder. Characters: Ma Zhe, Madman Location: Peishui City
• Recordings Enter the Case — The police discover recordings connected to Wang Hong. Characters: Ma Zhe, Wang Hong Location: Criminal investigation office
• Tapes Reveal Loneliness — The tapes contain messages about loneliness, family conflict, rain, and an unclear secret. Characters: Ma Zhe, Wang Hong Location: Criminal investigation office
• Residential Map Drawn — Ma Zhe maps residential areas along the railway to trace possible movements. Characters: Ma Zhe Location: Criminal investigation office
• Railway Crosses Provinces — Ma Zhe learns that the railway crosses three provinces, complicating witness tracing. Characters: Ma Zhe Location: Railway map
• Alarm Becomes a Clue — A train alarm heard on the recording is identified as a danger signal. Characters: Ma Zhe Location: Railway investigation site

The Suspect Who Insists

Xu Liang becomes a possible connection to the crime, but his work records provide an alibi. His repeated demand for arrest deepens Ma Zhe's suspicion and confusion.

Key Events

• Xu Liang Examined — The police examine Xu Liang, a factory hairdresser with a previous conviction. Characters: Ma Zhe, Xu Liang Location: Factory hairdressing workplace
• Alibi Removes Xu Liang — Xu Liang's work records place him away from the crime during the estimated death time. Characters: Ma Zhe, Xu Liang Location: Criminal investigation office
• Xu Liang Demands Arrest — Xu Liang repeatedly urges Ma Zhe to arrest him so the investigation will end. Characters: Ma Zhe, Xu Liang Location: Criminal investigation office
• Sleeping Pills Taken — Xu Liang swallows sleeping pills and is taken to a hospital. Characters: Ma Zhe, Xu Liang Location: Xu Liang's location

An Unfinished Case

Xu Liang's hospitalization is followed by the case being treated as closed. Ma Zhe receives an award but cannot accept the contradictions left behind.

Key Events

• Case Treated as Closed — After Xu Liang's hospital outcome is reported, the case is treated as closed. Characters: Ma Zhe, Xu Liang Location: Hospital
• Merit Award and Resignation — Ma Zhe receives a Grade 3 merit award but asks to resign from the work. Characters: Ma Zhe, Chief of Police Location: Criminal investigation bureau
• Investigation Remains Open — The Chief refuses resignation, orders silence about the Madman, and leaves the truth unresolved. Characters: Ma Zhe, Chief of Police, Madman Location: Criminal investigation bureau

Story Breakdown

• Bureau Relocation — The criminal investigation team prepares a new workplace while the Chief establishes a determined investigative atmosphere.
  • Closed Cinema Office — The police prepare to move into a closed cinema and establish their new office.
  • Chief's Direction — The Chief urges the team to maintain morale and keep an open mind.
• River Murder — Granny Four's death initiates the investigation and reveals immediate problems with the available evidence.
  • Granny Four Found — Granny Four is found murdered near the river.
  • Damaged Evidence — Rain damages footprints, while police dogs fail to identify a scent.
• Missing Madman — The Madman's disappearance connects the victim's private life to the unresolved official case.
  • Adoptive Family Link — Granny Four had adopted the Madman despite living without other family.
  • Search Without Closure — Ma Zhe searches for the Madman, who remains unfound when the film ends.
• Railway Recordings — Ambiguous recordings and railway geography create a wider but less certain field of investigation.
  • Wang Hong Tapes — Recordings connected to Wang Hong contain messages about loneliness, family conflict, rain, and an unclear secret.
  • Danger Signal — An alarm on the recording is identified as a signal used when danger appears ahead.
• Xu Liang Detour — Xu Liang appears to offer a possible answer, but his alibi and behavior make the case more contradictory.
  • Alibi Confirmed — Work records place Xu Liang away from the crime during the estimated time of death.
  • Demand For Arrest — Xu Liang repeatedly urges Ma Zhe to arrest him, claiming the investigation will otherwise never end.
• Institutional Silence — The official closure fails to resolve Ma Zhe's doubts, while the Chief imposes a final limit on the investigation.
  • Award And Resignation — Ma Zhe receives a Grade 3 merit award but asks to resign because he cannot continue.
  • Truth Withheld — The Chief refuses resignation, orders Ma Zhe to stop reporting about the Madman, and leaves the case unresolved.

Directed by

Wei Shujun

Key Cast

• Zhu Yilong — Ma Zhe
• Chloe Maayan — Bai Jie
• Hou Tianlai — Chief of Police
• Tong Linkai — Xie
• Kang Chunlei — Madman