Plot Analysis Summary
The film follows the uncertain investigation of the Shimoyama Incident amid labor conflict, railway disasters, and wider political unrest.
Story Structure — 4 Plot Phases
The Disappearance on the Tracks
Economic pressure and railway layoffs precede the president's disappearance and death. The uncertain circumstances turn the case into a public controversy.
Key Events
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Japan Faces Economic Pressure — The Dodge Line puts pressure on occupied Japan to revive its economy.
Location: Occupied Japan
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Railway Layoffs Announced — The railway president announces that tens of thousands of employees will lose their jobs.
Location: Japan
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President Disappears — After the announcement, the railway president disappears.
Location: Japan
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Body Found by Railway — The missing president is found dead beside a railway line.
Location: Beside a railway line
Evidence and Competing Suspicions
Yashiro pursues the case as blood evidence raises questions about how the body reached the tracks. Public suspicion initially focuses on left-wing labor activists, while the evidence remains disputed.
Key Events
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Yashiro Pursues the Case — Journalist Yashiro continues investigating despite pressure to cover other news. Characters: Yashiro
Location: Japan
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Blood Evidence Raises Doubts — A source says blood at the scene matches the victim but lies oddly relative to the train's direction. Characters: Yashiro
Location: The railway crime scene
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Evidence Is Disputed — Officials and reporters disagree about whether the blood evidence proves a killing before the body reached the tracks. Characters: Yashiro
Location: Japan
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Labor Activists Suspected — Early suspicion falls on left-wing labor activists.
Location: Japan
Railway Disasters and Shifting Attention
The Mitaka crash and Matsukawa derailment deepen fears that the railway incidents may be connected. Prematurely announced arrests and competing investigations complicate public understanding.
Key Events
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Mitaka Train Crash — An unmanned train crashes, killing six people and diverting attention from the president's death.
Location: Mitaka
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Arrests Announced Prematurely — Authorities announce arrests before the suspects have actually been taken into custody.
Location: Japan
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Matsukawa Derailment — A later derailment adds to fears that the railway disasters may be connected.
Location: Matsukawa
An Unresolved Investigation
Prosecutors reconsider their initial assumptions and examine physical traces, while conflicting accounts suggest several possible explanations. The investigation cannot establish where the victim was held or how his body was transported.
Key Events
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Investigators Reassess the Case — Prosecutors abandon the assumption that labor radicals caused the president's death and reconsider the evidence.
Location: Japan
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Clothing Evidence Examined — Investigators examine oil and pigments found on the victim's clothing.
Location: Japan
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Conflicting Accounts Persist — Accounts suggest kidnapping, an impostor near Gotano, and a possible killing elsewhere, but key details remain unverified.
Location: Gotano and other unspecified locations
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Case Remains Unresolved — Investigators cannot establish where the victim was held or how his body reached the railway embankment.
Location: Japan
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Treaty Protests Reframe the Story — Years later, treaty protests and news of police violence and a student's death form a wider backdrop of unrest.
Location: Japan