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Wall to Wall is a South Korean psychological thriller film written and directed by Kim Tae-joon. It was released on Netflix on July 18, 2025.
The film follows the life of Woo-Sung (Kang Ha-neul), who, despite taking loans, uses all his money, including his investments and even his mother's garlic farm, to purchase a flat in Seoul, South Korea.
Other characters include the penthouse owner, Eun‑hwa (Yeom Hye‑ran), and the mysterious upstairs neighbour, Jin‑ho (Seo Hyun‑woo). Both of them seek to take advantage of him in their own ways, as nightly disturbances from neighbours cause him to become anxious.
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Wall to Wall explores issues stemming from debt, paranoia, and the loneliness of modern urban living under endless pressure.
Towards the later part of the movie, Woo-sung learns that his upstairs neighbour, Jin-ho, was responsible for the disturbance, pushing him over the edge using hacked intercoms and speakers.
Woo-sung sets up a gas explosion that kills Jin-ho and Eun-hwa following a violent conflict and evidence burning. After surviving, he goes back home and laughs, tormented by the stress of city life.
Disclaimer: This article contains spoilers from the film Wall to Wall. Viewer's discretion is advised.
What is the plot of Wall to Wall?
The plot of Wall to Wall centres on Woo-sung, a man who risks everything to achieve his middle-class dream of owning a new apartment in Seoul.
He expects peace and economic progress, so he sells his mother's garlic farm, drains his money, and takes out loans to buy an 84-square-meter apartment. However, he struggles under severe debt and faces a housing market crisis that makes his dream worthless, turning his life into a waking nightmare.
Soon, Woo-sung is plagued every night by unexplained noises coming from the flat above. He is tired and grows more suspicious of his neighbours, but he has no evidence.
In an attempt to find the truth, he teams up with Jin-ho, as tensions escalate. But it turns out that Jin-ho has been orchestrating the psychological torture, controlling the intercom system and noise sources to make Woo-sung uncomfortable for a journalistic exposé on housing injustice and class resentment.
The film’s climax turns violent as Woo-sung takes desperate revenge. To destroy all evidence, he sets up a gas explosion that kills Jin-ho and Eun-hwa. He survives, but his mind remains shattered. During the final scenes, he hears phantom noises once more in the last minutes, laughing bitterly as the eerie remnants of a shattered dream swallow him.
Wall to Wall ending explained: Woo-sung’s last stand inside crumbling walls
During the final scenes of Wall to Wall, Woo-sung and Jin-ho, his upstairs neighbour, approach Eun-hwa in her penthouse to find a secret ledger that reveals her corruption. After failing to find the ledger, Jin-ho kills Eun-hwa's husband in a fit of rage, and things take a violent turn. Eun-hwa then attacks, but before she can kill Woo-sung, the injured Jin-ho strangles her to death.
Bleeding and defeated, Jin-ho begs Woo-sung to take the ledger and expose Eun-hwa on his behalf. However, Woo-sung, feeling deceived and emotionally consumed, refuses to be involved further.
He collects and destroys all of the evidence, including the ledger and apartment deed. He then quietly switches on the gas supply and leaves as the entire penthouse bursts into flames, killing Jin-ho and Eun-hwa, destroying all evidence.
Authorities look into the explosion but find nothing because all the evidence was destroyed by the flames. After a brief interrogation, Woo-sung is released, and the case is quietly closed without any further action.
In the movie's last scene, Woo-sung returns to his now-vacant Seoul apartment. He hears the same noises again, despite being the legal owner. It is a phantom echo of his trauma, which is not real. He laughs eerily, troubled by the experience and the irony that, while having survived the pressures of the city.
Wall to Wall explores the psychological effects of debt, loneliness, and urban living in the modern city. It explores how class anxiety, housing insecurity, and societal pressure can cause someone to lose their mind in their own house.
Wall to Wall was released on Netflix on July 18, 2025. Stay tuned for further updates.
