Directed by

Zhang Yimou
Made by

Emperor Motion Pictures
Read the complete plot summary and ending explained for Cliff Walkers (2021). From turning points to emotional moments, uncover what really happened and why it matters.
Set in the Japanese puppet state of Manchukuo in the early 1930s, the film follows Xiao Zheng Wang Naixun and three fellow Chinese Communist Party agents who parachute back into Harbin in Northeastern China. They undertake a covert operation code-named Utrenya (Russian: утреня) with a clear, high-stakes goal: to extract a former prisoner who could reveal the crimes of the Imperial Japanese Army to the international community, including unethical human experimentation and other horrors carried out by Unit 731. The mission is framed by a stark, urgent ethics—a resolve to shine a light on atrocities that would otherwise stay hidden, and a willingness to risk everything to bring those truths to a global audience.
Upon landing, the team splits into two groups to minimize the risk of capture and the pressure to betray their teammates or the mission itself. Their plan is precise but fragile, built on trust, secrecy, and the ever-present fear of discovery. Each segment carries a stark sign of their willingness to sacrifice themselves if it comes to that: pills tucked away in a matchbox bearing a Russian inscription, a备用 that they would swallow if they were forced to face interrogation or capture. This desperate precaution underscores the high stakes of their clandestine operation and the personal costs of resistance under occupation.
As the four agents thread through Harbin’s shadows, the story tightens around the brutal reality of covert warfare: the haunting possibility that their local contacts are not reliable allies but covert opposition, masquerading as compatriots. The team manages to slip away from a carefully staged trap, only to learn a harsher truth—that a local co-conspirator, who had witnessed the executions and the tortures inflicted on others, betrayed them after being exposed to the interrogations and the drug-assisted pressure designed to extract information.
The film remains steady in its focus on cunning, loyalty, and the moral peril of espionage. It portrays how fear, deception, and the lure of survival can fracture even the closest bonds, while the pursuit of truth about crimes committed in the shadows of war drives the characters forward. Throughout this tense journey, the audience is invited to confront difficult questions about accountability, the cost of resistance, and the ethical boundaries of exposing atrocities to the broader world, all set against the stark backdrop of Harbin’s icy streets and the murky corridors of power that can shield or crush those who seek the light.
Follow the complete movie timeline of Cliff Walkers (2021) with every major event in chronological order. Great for understanding complex plots and story progression.
Infiltration into Harbin
Four Chinese Communist Party agents parachute into Harbin, the capital of Manchukuo. They quickly assess terrain and risk, then decide to split into two groups to reduce exposure. Their overarching mission is to retrieve a former prisoner who could expose Unit 731's crimes to the world.
Split into two reconnaissance teams
On the ground, the team splits to pursue separate routes toward their contacts. The split is meant to minimize capture risk and keep the group from being forced to betray one another. The danger of discovery grows as the landscape becomes a labyrinth of loyalties and traps.
Self-sacrifice contingency
They carry contingency plans, including pills from a matchbox bearing a Russian inscription. They are prepared to ingest the pills if captured, a grim safeguard to prevent it from betraying secrets under torture. The pills symbolize their readiness to sacrifice their lives for the mission.
Encounter with covert opposition posing as allies
One group encounters local contacts who turn out to be covert opposition masquerading as compatriots. The deception threatens to derail the mission and place the operatives in deadly risk. Trust becomes a rare and valuable currency in Harbin's perilous networks.
Escape from a trap
The agents manage to escape the trap set by the counterintelligence operation. The narrow escape forces them to rethink their alliances and rely on their own wits and training. The mission remains alive, but the danger has grown more personal.
Betrayal by a local co-conspirator
They realize they have been betrayed by a local co-conspirator who witnessed the execution of others in the conspiracy. This revelation confirms the depth of danger within Harbin's networks. The team understands that loyalty is a luxury they can no longer assume.
Interrogation by electric shocks and drugs
The betrayed co-conspirator is subjected to torture and drug-assisted interrogation by his captors. The brutal methods underscore the ruthlessness of the opposition and the high stakes of the operation. The scene reveals the inhuman pressure analysts face in this environment.
Utrenya is formalized: plan to extract the prisoner
Despite the setbacks, the operation Utrenya is formalized, with the four agents committing to extract a former prisoner who could reveal the Imperial Army's crimes. The plan consolidates the group's resolve and resources behind a single objective. Preparations begin in earnest under the looming threat of discovery.
Objective: expose Unit 731 to the world
The key objective is to extract the prisoner who could reveal Unit 731's atrocities to the international community. The team aims to deliver evidence that would implicate the Imperial Japanese Army in human experimentation. The risk of discovery amplifies as they edge closer to the prisoner.
Parallel tracks under pressure
The two groups press forward on parallel tracks, balancing secrecy with the urgency of the mission. Each group navigates potential betrayals and shifting loyalties while keeping their eyes on the prisoner objective. Tension rises as the net around Harbin tightens.
Revealed unreliability of local contacts
The betrayal within the local conspiracy becomes clearer, forcing the agents to recalibrate their approach. They must operate with greater caution and rely more on internal coordination than on supposed allies. Trust becomes the most expensive commodity in their operation.
Regroup and press on
After the betrayals are revealed, the four agents regroup and resolve to press on with the extraction and exposure plan. They reaffirm their commitment to the mission, prepared to endure further hardship to bring the crimes to light. The timeline ends with a vow to continue despite the mounting dangers.
Explore all characters from Cliff Walkers (2021). Get detailed profiles with their roles, arcs, and key relationships explained.
Xiao Zheng (Wang Naixun)
One of the four Chinese Communist Party agents sent back to Harbin. He remains disciplined and composed under pressure, relying on careful planning to navigate double-crosses. His commitment to the mission shows in his willingness to endure risk for the greater goal of exposing wartime crimes. He embodies the quiet courage of clandestine operatives in a dangerous era.
Western Guy (Danny Ray)
A Western contact intersecting with the Harbin operation. He navigates language barriers and shifting loyalties while influencing the flow of information. His presence adds an element of international tension to the mission, challenging the Chinese agents to assess trust across cultural lines. His role underscores the complexity of espionage in a geopolitically charged setting.
Lao Feng (Sha Yi)
A local figure with ambiguous loyalties who interacts with the four agents. He embodies the murky, high-stakes environment of covert networks in Manchukuo. His actions can both aid and hinder the mission, reflecting the precarious balance between survival and allegiance. He remains a wildcard whose choices illuminate the era's moral ambiguity.
Zhang Xianchen (Zhang Yi)
An operative who coordinates between different threads of the spy operation. He focuses on logistics, timing, and risk management to keep the mission moving. His role highlights how strategic planning under pressure sustains clandestine efforts in hostile territory. He embodies pragmatic teamwork in the face of betrayal.
Wang Yu (Qin Hailu)
A former prisoner who could expose the crimes of the Imperial Japanese Army, making him a focal point for the mission. His release or cooperation may influence the trajectory of the operation. He becomes a potential source of critical information, balancing risk with the possibility of accountability on the world stage.
Xie Zirong (Lei Jiayin)
An agent who endures the pressure of deception and the danger of betrayal. He remains focused on the mission's core objective while navigating a web of uncertain loyalties. His perseverance and quick thinking help the team adapt when plans go awry.
Zhou Yi (Yu Hewei)
A section chief overseeing the operation, responsible for high-level decisions and risk assessment. He coordinates the team’s actions, weighing the cost of exposure against the need to obtain solid evidence of war crimes. His leadership is tested by betrayals and the unpredictability of the local network.
Zhang Jie (Xue Yuanyuan)
A colleague within the network whose role involves supporting the team’s clandestine activities. She helps manage information flow and maintain cover under dangerous circumstances. Her presence reflects the collaboration required to keep a secret operation viable in a hostile environment.
Learn where and when Cliff Walkers (2021) takes place. Explore the film’s settings, era, and how they shape the narrative.
Time period
Early 1930s
Set in the early 1930s during Japan's occupation of Manchuria and the establishment of the Manchukuo puppet state. The era is defined by political tension, clandestine networks, and international scrutiny over war crimes. The plot centers on the risk of exposure of Imperial Japanese Army crimes, including human experimentation associated with Unit 731.
Location
Harbin, Manchukuo
Harbin, the northern city in the puppet state of Manchukuo, provides a cold, shadowy backdrop for covert operations. The film portrays Harbin as a frontline of espionage, with checkpoints and coded meetings shaping the tense atmosphere. Its frosty streets and secretive venues reflect the strategic importance of the city in the early 1930s.
Discover the main themes in Cliff Walkers (2021). Analyze the deeper meanings, emotional layers, and social commentary behind the film.
🕵️♂️
Espionage
Covert missions drive the narrative as agents blend into enemy territory. The story hinges on assembling intelligence, avoiding capture, and navigating a network of double-crossers. Loyalty to the cause clashes with the practical realities of survival in a hostile environment. The tension between secrecy and exposure highlights the price of truth in wartime.
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Betrayal
Betrayal threads through the mission when a local ally turns out to be a covert opponent. The agents must reassess trusted contacts and weigh the dangers of betrayal against their objectives. The film shows how deception can fracture even tightly knit teams. Betrayal tests the resolve and moral code of the operatives.
⚖️
Moral Dilemma
Characters grapple with ethical choices under pressure, balancing mission success with human consequences. The quest to reveal war crimes pits loyalty to comrades against the cost to innocent lives. The pills for protection, the risk of torture, and the treatment of prisoners all raise questions about means versus ends. The story portrays the uneasy line between necessary action and moral compromise.

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Explore the mobile appDiscover the spoiler-free summary of Cliff Walkers (2021). Get a concise overview without any spoilers.
In the bleak winter of the early 1930s, the Japanese‑controlled puppet state of Manchukuo looms over a landscape scarred by occupation and whispered resistance. Snow‑capped streets of Harbin pulse with a mix of foreign authority and secretive undercurrents, where every alley could conceal a listening post and every glance might betray a hidden agenda. The film captures this uneasy atmosphere with a visual palette of frosty blues and muted grays, underscoring the constant chill of surveillance and the desperate hope that flickers beneath it.
Into this volatile setting, four dedicated Communist operatives are parachuted back onto Chinese soil, tasked with a covert assignment that could alter the course of the conflict. Their mission, known only by a cryptic code name, demands absolute secrecy and unwavering resolve. The agents move with disciplined precision, yet beneath their stoic exterior simmers a tension born of past sacrifices and the ever‑present risk of capture. Their camaraderie is built on shared ideology and a willingness to face the unknown together, even as the world around them tightens its grip.
From the moment they touch down, the sense of looming danger is palpable. The agents split into smaller groups, a tactical choice that reflects both their strategic acumen and the fragile trust required to navigate an environment rife with deception. Their preparations hint at a stark, almost ritualistic readiness for the worst, while the muted, hushed tones of the city amplify a feeling that every step forward is a step deeper into a maze of uncertainty. The story unfolds as a tense, atmospheric spy thriller, inviting the audience to linger in the shadows where loyalty is tested and the line between ally and adversary blurs.
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