Sex Is Zero 2002

Comedy

Romance

Box Office

$24M

Runtime

96 mins

Language

Korean

Made by

Doosaboo Film

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Sex Is Zero Plot Summary

Read the complete plot summary and ending explained for Sex Is Zero (2002). From turning points to emotional moments, uncover what really happened and why it matters.

The plot centers on college student Eun-shik Im Chang-jung and his earnest, often awkward, efforts to win over his junior, Eun-hyo Ha Ji-won. After completing a mandatory two-year military service, he transfers to the National University with plans to study Law. He shares a cramped dorm with three roommates who are typical incoming freshmen, adding a sense of bustling campus life to his already self-conscious journey. Right from their first encounter, Eun-hyo’s presence shakes up his world, even as his own nerves tend to get the better of him. The movie follows how a series of clumsy, well-meaning gestures gradually pull them into a web of feelings neither fully understands at first.

Eun-hyo, an aspiring national aerobic athlete, first notices the quirky, sometimes lingeringly awkward attention from Eun-shik in the college canteen. He stares, almost absentmindedly, at her tightly clasped thighs visible under a short skirt, and she responds with a provocative, taunting display that catches him off guard. This awkward dynamic becomes the spark for a pattern of unintended closeness and misread signals, as they navigate the line between admiration and irritation in crowded halls and late-night conversations. Despite her initial sympathy for his one-sided crush, Eun-hyo ultimately becomes involved with another widely admired student, Sang-ok, who embodies a flashy confidence that appeals to her in the moment.

Sang-ok’s behavior complicates everything: he spends a night with Eun-hyo and leaves her with an unplanned pregnancy. True to his spoiled upbringing, he offers money to terminate the pregnancy and shows little remorse or responsibility. Shocked and insulted by his attitude, Eun-hyo feels betrayed and decides to take control of the situation, opting to pursue the abortion. Struggling with fear and uncertainty, she seeks support for what’s a deeply personal and painful choice, but the clinic’s request for someone to accompany her highlights how isolating the moment feels. Desperate for companionship, she turns to Eun-shik, who initially misreads the situation as a date but, moved by her vulnerability, chooses to stand by her side through the procedure and the long recovery that follows.

In the days after the abortion, Eun-shik becomes a steady presence: he cooks meals, tends to her post-operative fever, and offers quiet companionship as she processes the breakup with Sang-ok. He also helps her cope with the emotional aftermath, even as she wrestles with the sense of loss and confusion that accompanies such a life-altering sequence. The national aerobic competition looms large, and Eun-hyo fights through the exhaustion and heartbreak to step onto the stage with determination, delivering a performance that is both technically proficient and emotionally charged. The moment underscores her resolve to pursue excellence even amid personal pain, and it marks a turning point in how both characters confront their feelings.

After the performance, the fallout hits hard. Eun-hyo retreats to a restroom, where she cries and experiences a physical reminder of her abortion. Eun-shik discovers her missing and acts quickly, rushing her to the hospital to ensure she receives care. Consumed by a mix of anger and protective instinct, he locates Sang-ok in a post-competition celebration and confronts him with the truth of Eun-hyo’s tragedy, ending the confrontation with a punch that signals how deeply the events have affected him. The film closes on a tentative note: Eun-hyo is discharged from the hospital, and she asks whether Eun-shik’s feelings for her remain, leaving their future open to interpretation but rooted in the bond that formed through hardship, care, and the messy complexities of love.

Sex Is Zero Timeline

Follow the complete movie timeline of Sex Is Zero (2002) with every major event in chronological order. Great for understanding complex plots and story progression.

Post-military transfer and first arrival at National University

After completing mandatory two-year military service, Eun-shik transfers to National University. He shares a cramped dorm with three incoming freshmen, setting a bustling campus backdrop. He begins earnest, awkward efforts to win over his junior Eun-hyo, whose presence unsettles him.

post-military transfer / early campus days National University campus, dorm area

First encounter and budding awkward interest

From their initial meeting, Eun-hyo disrupts his carefully calculated nerves. He stares and fumbles, while she teases him with a provocative, taunting display that lingers in his mind. The spark begins a pattern of clumsy, well-meaning gestures.

early campus life Campus, various halls

Eun-hyo's relationship with Sang-ok begins

Eun-hyo becomes involved with Sang-ok, a widely admired student whose flashy confidence attracts her. The relationship introduces a new dynamic into Eun-shik's quiet crush, intensifying campus intrigue. Eun-shik's feelings become more complicated as she spends time with him.

early dating with Sang-ok National University campus / student circles

Night with Sang-ok leads to pregnancy

Sang-ok spends a night with Eun-hyo, and she discovers she is pregnant. The revelation brings shock and a sense of gravity to both, shifting the stakes of their relationships. Eun-hyo's plans for her future become tangled in fear and uncertainty.

shortly after starting dating Campus and nearby areas

Sang-ok offers money to terminate; no remorse

Sang-ok's spoiled attitude comes to the fore as he offers money to terminate the pregnancy and shows little responsibility. Eun-hyo feels betrayed by the man she trusted, deepening her sense of isolation. The choice about abortion now dominates her life.

aftermath of pregnancy Campus / city clinic approach

Clinic requests companion; Eun-shik volunteers

Eun-hyo seeks support from a clinic, and Eun-shik steps in to accompany her. He initially misreads the situation as a date, but his resolve to stand by her through the procedure remains. The moment marks a turning point in his feelings and in their bond.

when seeking abortion help Clinic / hospital entrance

Abortion procedure and long recovery

The abortion takes place with Eun-shik by her side, offering quiet, practical support. He cooks meals and tends to her post-operative fever as she processes the painful experience. Their companionship deepens into a care-based closeness.

abortion day and immediate recovery Clinic and hospital vicinity

Emotional aftermath and growing bond

In the days after, Eun-hyo mourns the breakup with Sang-ok while Eun-shik remains a steady presence. He helps her cope with loss and confusion, listening more than speaking. The bond between them shifts from awkward care to mutual reliance.

post-abortion days Dorm / campus apartments

Aerobic competition looms; Eun-hyo trains through exhaustion

With the national aerobic competition approaching, Eun-hyo fights fatigue and heartbreak to prepare. She channels determination into a performance that blends technical skill with emotional depth. The strain reveals her resolve to excel despite personal turmoil.

lead-up to competition Training facility / gym

National aerobic competition day; a charged performance

Eun-hyo steps onto the stage with precision and emotional intensity. The crowd and her own ache sharpen her focus as she delivers a technically proficient routine. The moment becomes a turning point, illustrating resilience amid inner pain.

day of competition Competition venue

Restroom fallout; physical reminder of abortion

After her routine, Eun-hyo collapses into a restroom, crying and facing a visceral reminder of the abortion. The moment underscores the lasting weight of her decisions. The emotional and physical strain exposes the fragility underneath her steadfast performance.

immediately after performance Competition venue restroom

Eun-shik locates Eun-hyo and rushes her to hospital

Eun-shik discovers Eun-hyo missing and acts quickly to get her medical care. He ensures she receives attention and support, reinforcing the bond between them. The ordeal reframes their relationship through care and urgency.

immediately after restroom moment Competition venue vicinity; hospital

Confrontation with Sang-ok and a punch

Eun-shik tracks down Sang-ok at a post-competition celebration and confronts him with the truth of Eun-hyo’s tragedy. The confrontation ends with a decisive punch, signaling how deeply the events have affected him. The moment crystallizes the consequences of their choices.

immediately after the competition Post-competition celebration

Ending: Eun-hyo discharged; uncertain future

Eun-hyo is discharged from the hospital, and she asks whether Eun-shik's feelings remain. The film leaves their future open, rooted in the connection formed through hardship, care, and complex love. The story closes with a note of tentative hope amid unresolved tensions.

after recovery; ending Hospital / campus

Sex Is Zero Characters

Explore all characters from Sex Is Zero (2002). Get detailed profiles with their roles, arcs, and key relationships explained.

Eun-sik (Im Chang-jung)

An earnest, self-conscious college student who starts as a shy admirer of Eun-hyo and evolves into a loyal, protective friend. His awkwardness gives way to quiet maturity as he helps Eun-hyo navigate heartbreak and personal turmoil. He remains a steady presence amid campus chaos and the pressures of university life.

💬 Awkward 💖 Caring 🤝 Loyal

Eun-hyo (Ha Ji-won)

An aspiring national aerobic athlete who is confident yet vulnerable, navigating a complicated relationship with Eun-sik while dealing with a pregnancy and its consequences. She embodies determination and resilience as she pursues athletic excellence despite personal upheaval. Her experiences probe the balance between ambition, autonomy, and emotional vulnerability.

💪 Ambitious 🏃‍♀️ Athlete 💔 Heartbreak

Sex Is Zero Settings

Learn where and when Sex Is Zero (2002) takes place. Explore the film’s settings, era, and how they shape the narrative.

Time period

early 2000s

Set in the early 2000s in South Korea, the story centers on university life amid social expectations around dating, sexuality, and personal responsibility. The backdrop includes mandatory military service as a looming rite of passage for male characters, shaping their choices and life plans. The campus calendar—classes, competitions, and late-night conversations—frames the pace of the romance and the decisions that follow.

Location

National University, college campus, dormitory

The film unfolds on a modern South Korean university campus, anchored by a cramped dorm and the bustle of crowded halls. Key locations include the college canteen where Eun-hyo's presence first disrupts Eun-sik, and the dormitory where their nerves, miscommunications, and growing bond play out. The setting captures the energy of campus life, the pressure of exams, and the intimate moments that unfold behind closed doors.

🎓 University life 🏫 Campus 🧭 Youth culture

Sex Is Zero Themes

Discover the main themes in Sex Is Zero (2002). Analyze the deeper meanings, emotional layers, and social commentary behind the film.

💘

Romance

The film tracks slow-burning affection between Eun-sik and Eun-hyo, built on misread signals and intimate moments in crowded spaces. Their attraction is awkward and often mishandled, revealing how nerves shape romantic pursuit. Moments in the canteen and dorm corridors become micro-laboratories for desire and boundary-testing. The story uses humor and discomfort to explore how young love can be sincere even when missteps complicate trust.

⚖️

Consequences

A pregnancy resulting from a complicated encounter introduces a moral crisis that tests loyalty and responsibility. Sang-ok's dismissive attitude contrasts with Eun-hyo's determination to decide for herself. The abortion sequence exposes vulnerability and isolation, forcing the characters to confront what they owe to each other. The film frames these choices within the pressures of campus expectations and gender dynamics.

🧭

Growth

After the crisis, Eun-sik's steady presence helps Eun-hyo endure the emotional aftermath. Her resilience culminates in a powerful performance at the national aerobic competition. The experience reshapes their relationship, suggesting growth may emerge from hardship. The narrative emphasizes care, accountability, and the messy path from infatuation to mutual support.

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Sex Is Zero Spoiler-Free Summary

Discover the spoiler-free summary of Sex Is Zero (2002). Get a concise overview without any spoilers.

In the bustling corridors of a national university, a recent veteran named Eun‑sik steps back into civilian life with a single goal: to ace the state exam and earn a law degree. The campus hums with youthful energy, cramped dorm rooms, and the inevitable clash between disciplined past and the chaotic freedom of college. Amid lecture halls and late‑night canteens, the world feels simultaneously fresh and intimidating, a backdrop that magnifies every nervous stumble and tentative hope.

Across the same cafeteria, Eun‑hyo moves with a confident athletic poise, training for national aerobic competition while navigating the expectations placed on a talented student. Her presence exudes both strength and a hint of vulnerability, drawing curious glances from those around her. When the two first cross paths, the ordinary rhythm of campus life is subtly disrupted, hinting at a connection that could transform both of their futures.

The film’s tone balances gentle comedy with earnest drama, capturing the awkward charm of first‑year romance filtered through the lens of a man still learning to speak the language of civilian intimacy. Eun‑sik’s earnestness and self‑consciousness clash with Eun‑hyo’s spirited independence, creating a dynamic that is at once endearing and fraught with misread signals. Their interactions are framed by the lively, sometimes chaotic, energy of university life—lecture marathons, shared meals, and the ever‑present pressure of exams and athletic ambitions.

As they navigate crowded halls, quiet study corners, and the lingering echo of military discipline, the story promises a heartfelt exploration of how two very different people can find common ground in the messiness of growing up. The atmosphere invites curiosity about whether their burgeoning bond will survive the inevitable uncertainties that accompany love, ambition, and the search for identity.

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