Flu

Flu

Year: 2013

Runtime: 122 min

Language: English

Director: Sung-su Kim

ActionDrama

A lethal airborne virus swiftly spreads panic and chaos throughout Bundang, a suburb of Seoul. As the government considers a full city quarantine, an infectious disease specialist and a dedicated rescue worker embark on a perilous mission. They strive to identify the origin of the outbreak and locate the essential serum required for a vaccine, all while racing against time to control the escalating epidemic and protect the lives of numerous people.

Warning: spoilers below!

Haven’t seen Flu yet? This summary contains major spoilers. Bookmark the page, watch the movie, and come back for the full breakdown. If you're ready, scroll on and relive the story!

Timeline & Setting – Flu (2013)

Explore the full timeline and setting of Flu (2013). Follow every major event in chronological order and see how the environment shapes the story, characters, and dramatic tension.

Time period

The events unfold in contemporary South Korea, reflecting a modern urban outbreak with advanced medical institutions, media coverage, and international health organizations involved. The story follows the rapid escalation from a local incident to a nationwide crisis, illustrating how urban density accelerates contagion. Government and medical responses shift from initial denial to urgent containment and mass evacuation.

Location

Bundang, Seoul, Tancheon Sports Complex

Bundang serves as the outbreak's initial hub in a modern South Korea setting, with the Contagion Center located there. The city becomes a quarantine battleground as the virus spreads through hospitals, markets, and transit. Seoul later becomes central for care and vaccine efforts as authorities coordinate with international agencies.

🗺️ Bundang 🏙️ Seoul 🚑 Outbreak setting

Last Updated: October 03, 2025 at 19:48

Main Characters – Flu (2013)

Meet the key characters of Flu (2013), with detailed profiles, motivations, and roles in the plot. Understand their emotional journeys and what they reveal about the film’s deeper themes.

Ju Byung-woo

A Seoul-based smuggler who uncovers that illegal immigrants died in a shipping container from an unknown illness. He and his brother Byung-ki carry the sole survivor, Monssai, and a cellphone video to their boss, hoping to leverage the incident. His condition worsens as the disease takes hold, and he ultimately dies from the infection.

🧭 Leader 🗝️ Smuggler

Ju Byung-ki

Byung-woo's brother who is involved in the cover-up and investigation. He struggles with questions about the container and becomes entangled in efforts to reach his brother. In a final act tied to vengeance, he kills Monssai and meets his end amid the chaos.

🛡️ Brother 🗡️ Ruthless

Monssai

The sole survivor from the shipping container who carries the potential antibodies. His presence catalyzes the spread of the outbreak and the race to isolate and study him. He is eventually found in the isolation zone and killed by Byung-ki during a desperate bid for vengeance.

🧬 Survivor 🧪 Antibody carrier

Dr. Kim In-hae

A doctor at the Contagion Center who pieces together the mutation theory from a cellphone video. She advocates for experimental treatments and works to shield Mi-reu, navigating bureaucratic resistance. Her interventions with Mi-reu underscore the human stakes of a medical crisis.

🧪 Doctor 🧭 Determined

Oh Ji-goo

An Emergency Response Team member who retrieves a bag and becomes involved in the pursuit of the sick Monssai and the care of Mi-reu. He relentlessly pursues rescue missions and shows resolve in dangerous, chaotic conditions.

🛡️ Rescuer 🗺️ Field agent

Bae Kyung-ub

An ERT member who assists with the containment and rescue operations. She supports the medical and logistical response, staying close as the situation deteriorates and helping free those trapped in the market and IQZ.

🛡️ Rescuer 🧭 Investigator

Mi-reu

In-hae's daughter who shows symptoms of the infection but develops antibodies that aid in the fight against the disease. She undergoes protective measures and becomes a focal point in attempts to find a cure, ultimately traveling toward Seoul for vaccine development.

👶 Child 🫶 Hope

Gook-hwan

An infected man who incites unrest and leads a mob toward the highway where the containment is tested. His actions escalate violence and complicate the evacuation and defense of the city.

🗡️ Aggressor 🪖 Mob leader

Leo Snyder

A WHO official who pressures authorities to release uninfected individuals and coordinates international response. His involvement highlights global scrutiny and the political dimensions of outbreak management.

🧭 International pressure 🎯 Health official

Last Updated: October 03, 2025 at 19:48

Major Themes – Flu (2013)

Explore the central themes of Flu (2013), from psychological, social, and emotional dimensions to philosophical messages. Understand what the film is really saying beneath the surface.

🦠 Outbreak

A deadly, mutating virus drives the plot from the discovery of deaths in a shipping container to its swift spread through hospitals and city streets. The film emphasizes how quickly contagion can overwhelm urban systems and expose gaps in health surveillance. It highlights the race to identify the pathogen before it kills within 36 hours. The mutated H5N1 strain becomes a constant threat that shapes every decision.

🚧 Containment

Quarantine becomes the central tool, with IQZ beneath stadiums and camps outside cities. The military, health agencies, and politicians clash over strategy while resources and communication falter. Civilians face scarcity, panic, and rioting as trust between authorities and the public fractures. The film probes the ethics and efficacy of forced isolation under extreme pressure.

💉 Treatment

Doctors race to find a remedy, exploring antibodies and transfusions as possible bridges to a cure. In-hae's effort to use Monssai's antibodies on a patient is resisted, revealing tensions between urgency and protocol. The film centers on the stubborn hope that a child’s immune response might unlock a vaccine. It shows improvisation and moral risk in desperate medical settings.

🤝 Humanity

The outbreak strains relationships and reveals acts of courage: rescuers, doctors, and families band together to shield the vulnerable. Riots and fear give way to protective instincts as the state adapts its response and halts drastic measures. The bond between mother and child anchors the story, underscoring resilience amid chaos.

Last Updated: October 03, 2025 at 19:48

Mobile App Preview

Coming soon on iOS and Android

The Plot Explained Mobile App

From blockbusters to hidden gems — dive into movie stories anytime, anywhere. Save your favorites, discover plots faster, and never miss a twist again.

Sign up to be the first to know when we launch. Your email stays private — always.

Unlock the Full Story of Flu

Don't stop at just watching — explore Flu in full detail. From the complete plot summary and scene-by-scene timeline to character breakdowns, thematic analysis, and a deep dive into the ending — every page helps you truly understand what Flu is all about. Plus, discover what's next after the movie.

Flu Summary

Read a complete plot summary of Flu, including all key story points, character arcs, and turning points. This in-depth recap is ideal for understanding the narrative structure or reviewing what happened in the movie.

Flu Summary

Flu Timeline

Track the full timeline of Flu with every major event arranged chronologically. Perfect for decoding non-linear storytelling, flashbacks, or parallel narratives with a clear scene-by-scene breakdown.

Flu Timeline

Flu Spoiler-Free Summary

Get a quick, spoiler-free overview of Flu that covers the main plot points and key details without revealing any major twists or spoilers. Perfect for those who want to know what to expect before diving in.

Flu Spoiler-Free Summary

More About Flu

Visit What's After the Movie to explore more about Flu: box office results, cast and crew info, production details, post-credit scenes, and external links — all in one place for movie fans and researchers.

More About Flu