What are the main themes of Misbehavior?

The summary picks out 3 themes: Power & Ambition, Toxic Relationships and Violence & Consequences.

Who directed Misbehavior?

Misbehavior (2016) was directed by Kim Tae-yong and runs 1 hour 36 minutes.

Misbehavior (2016) Plot Summary & Timeline

Q: Who are the main characters in Misbehavior?

The story follows Park Hyo-joo (Kim Ha-neul) (played by Kim Ha-neul), Cha Hae-young (Yoo In-young) (played by Yoo In-young) and Shin Jae-ha (Lee Won-keun) (played by Lee Won-keun).

No spoilers

What Is Misbehavior About?

The premise of Misbehavior in 238 words, with nothing given away. The full story follows below.

In a bustling Korean high school where the routine of classes masks an undercurrent of ambition and rivalry, a new academic year brings unexpected strain. The corridors echo with the pressures of exams, extracurricular competitions, and the unspoken hierarchies that shape students’ futures. Within this tightly knit community, the atmosphere is simultaneously familiar and unsettling, hinting that ordinary school life can quickly become a crucible for more personal, hidden conflicts.

Park Hyo-joo arrives as a part‑time chemistry teacher and, after a colleague’s maternity leave, steps into the role of homeroom instructor. Juggling a demanding job with a fraught personal life, she quickly feels the sting of comparison to Cha Hae‑young, a newly tenured teacher whose swift rise is tied to influential family connections. Across the faculty and student body, the charismatic Shin Jae‑ha—a talented yet enigmatic male student— becomes a silent focal point of attention, his presence stirring curiosity and subtle competition among the adults.

The film’s tone is a blend of tense realism and moody introspection, inviting viewers to watch the delicate balance of power, desire, and secrecy shift beneath the surface of everyday school scenes. As Hyo‑joo navigates her aspirations and insecurities, the relationships among the three central figures begin to reveal layers of unspoken longing and rivalry. Their intertwined lives suggest that a single moment of exposure could unravel carefully maintained facades, setting the stage for choices that will reverberate far beyond the classroom walls.

Full plot

What Happens in Misbehavior?

The complete story of Misbehavior, from the first scene to the last, in 340 words (about 1 minute). Spoilers throughout. Names in the text link to 1 cast member page.

Spoilers ahead

Park Hyo-joo [Kim Ha-neul] is a part-time chemistry teacher who steps in as the homeroom teacher after a colleague goes on maternity leave, only to find herself navigating a dangerous dynamic with Cha Hae-young [Yoo In-young], a newly tenured instructor whose wealth and influential connections give her undeniable power in the school. At home, Park Hyo-joo wrestles with a deadbeat boyfriend who gaslights her, a relationship that frays her nerves and pushes her toward breaking points.

When Park Hyo-joo discovers Cha Hae-young in an intimate encounter with a student, Shin Jae-ha [Lee Won-keun], the tension explodes. The next morning, Park Hyo-joo uses the threat of exposure to demand that Cha Hae-young end the affair with Shin Jae-ha. Yet the power play doesn’t end there. To keep Shin Jae-ha close and under her influence, Park Hyo-joo enrolls him in ballet classes, preparing him for a big competition, and in a moment of loneliness she seeks comfort in an illicit, complicated relationship with him.

Shin Jae-ha ultimately earns a podium place, taking 2nd in the competition, a success that sours as he reveals a bitter truth: Cha Hae-young orchestrated their liaison to bend Park Hyo-joo to her will. The school’s board does not renew Park Hyo-joo’s contract, and she pleads with Cha Hae-young to negotiate with her father, the Lee Kyung-young who chairs the board, in a bid to hold onto her position.

In a pivotal hotel room scene, Cha Hae-young confesses that the romance with Shin Jae-ha was never about love. Enraged and feeling betrayed, Park Hyo-joo murders Cha Hae-young by pouring boiling water over her face. She phones Shin Jae-ha to come to the room, and they have a final, desperate moment together, but he declares that his heart belongs to Cha Hae-young, not Park Hyo-joo. The revelation shatters him, especially as he discovers Cha Hae-young’s lifeless body.

The film closes with a stark, unsettling image: Park Hyo-joo sitting at school as the police arrive, a quiet, haunted end that leaves the audience with questions about desire, power, and consequence.

Timeline

Misbehavior Timeline: Every Key Event in Order

15 key events in the order they happen, from “Park Hyo-joo becomes homeroom teacher” to “Police arrive as Park eats at school”. 15 events name a place, across 12 locations.

1

Park Hyo-joo becomes homeroom teacher

Park Hyo-joo, a part-time chemistry teacher, takes over as homeroom teacher when her colleague goes on maternity leave. She navigates the new role while managing the expectations of the faculty and a precarious professional status. The start of the term marks the first signs of the school-year power dynamics that will drive the story.

When:Beginning of term Where:High School
2

Cha Hae-young earns tenure, sparks rivalry

Cha Hae-young secures tenure through powerful connections, setting up a clash with Park Hyo-joo. The two women become rivals within the same institution, each vying for influence over students and colleagues. The rivalry intensifies the atmosphere around the faculty and the students.

When:Shortly after Cha's tenure Where:High School, Staff Room
3

Park's personal life deteriorates at home

At home, Park's relationship with her deadbeat boyfriend deteriorates as he gaslights her. The emotional strain adds to her insecurity and thirst for control. She begins to see the school environment as the only arena where she can assert power.

When:Early in the story Where:Park Hyo-joo's home
4

Park catches Cha with Shin Jae-ha

One night, Park discovers Cha Hae-young having sex with Shin Jae-ha, a male student. The discovery confirms Park's fear that Cha is manipulating others to advance herself. It becomes the catalyst for Park's plan to confront Cha.

When:One night Where:Cha Hae-young's apartment
5

Park threatens Cha to end the affair

The next morning, Park confronts Cha and threatens to expose the affair unless Cha ends it with Shin Jae-ha. She leverages the threat to try to force Cha to back off. Cha's reaction hints at her calm, calculating approach to the conflict.

When:The next morning Where:Cha Hae-young's apartment
6

Park enrolls Shin in ballet to help him

Park enrolls Shin Jae-ha in ballet classes to support him for an upcoming competition. The project gives her a sense of purpose and a way to stay close to Shin. The arrangement also deepens the complex, inappropriate attachment she has begun to nurture.

When:Over the following weeks Where:Ballet studio
7

Park seduces Shin to cope with loneliness

During this period, Park seduces Shin to cope with loneliness and thwart boredom. The relationship becomes a substitute for genuine affection, masking her insecurity and need for control. Shin, meanwhile, remains largely unaware of her darker motives.

When:During ballet training period Where:Ballet studio
8

Shin wins second place at the competition

Shin Jae-ha wins second place at the competition, a milestone that boosts his status and escalates the stakes of the triangle. The victory validates the efforts Park put into supporting him, but it also intensifies Cha Hae-young's leverage over Park. The personal triumph comes at a price in the corresponding power struggle.

When:Competition day Where:Dance competition venue
9

Shin reveals the manipulation behind the affair

After the win, Shin reveals to Park that their affair was designed to give Cha leverage over Park rather than to express love. Park realizes she has been used as a pawn in Cha's strategy. The revelation drives her further toward desperation and retaliation.

When:After competition Where:Park's home
10

Park's contract is not renewed

Park's contract is not renewed, marking a formal professional downfall. The administration cites the scandal and performance reasons, though the underlying manipulation becomes clear to the audience. The career setback heightens Park's sense of vulnerability and anger.

When:Shortly after the revelation Where:School administration offices

Show the other 5 events of Misbehavior

11

Park negotiates with Cha via her father

Park pleads with Cha to negotiate with Cha's father, the board chairman, hoping for a lifeline. Cha agrees to engage in talks, shifting the balance of power in the conflict. The episodes reveal how far Cha is willing to go to protect herself.

When:After contract non-renewal Where:Cha Hae-young's office / Boardroom
12

Hotel confession and murder

In a hotel suite, Cha confesses that she was fooling around with Shin and never truly loved him. Park murders Cha by pouring boiling water over her face in a brutal act of revenge. The murder underscores the film's descent into a merciless cycle of manipulation and vengeance.

When:Following Cha's confession Where:Hotel suite
13

Park and Shin's hotel encounter after the murder

Park calls Shin Jae-ha into the hotel room and they have sex, but he makes clear that his love remains with Cha. The scene reveals how far Park has fallen and how little genuine affection has survived the triangle. Shin's response foreshadows the tragedy to come.

When:Right after the murder Where:Hotel suite
14

Shin discovers Cha's corpse

Shin Jae-ha is devastated to discover Cha Hae-young's corpse, realizing the true consequences of the manipulation around him. The revelation compounds his heartbreak and leaves him adrift in a world where adults have used him as a pawn. The emotionally shattered moment marks the film's turning point.

When:Immediately after the sexual encounter Where:Hotel room
15

Police arrive as Park eats at school

The film ends with Park Hyo-joo eating at the school as police arrive to arrest her. The closing moment emphasizes the irreversible consequences of the love-triangle's toxic dynamics. Her fate remains unresolved as the authorities take control.

When:Ending scene Where:School cafeteria

Characters

Who Are the Main Characters in Misbehavior?

3 characters, among them Park Hyo-joo (Kim Ha-neul), Cha Hae-young (Yoo In-young) and Shin Jae-ha (Lee Won-keun): who each one is and the part they play in the story. Every profile links to the actor’s page.

PH
Park Hyo-joo (Kim Ha-neul)

Played by Kim Ha-neul

A part-time chemistry teacher who becomes the homeroom teacher and quickly navigates a web of rivalry and loneliness. Her envy toward Cha Hae-young drives her to extreme, morally ambiguous decisions. She becomes entangled in an inappropriate relationship with a student and ultimately faces severe consequences for her actions.
- 👩‍🏫 Teacher
- 💔 Obsession
- 🎯 Ambition
CH
Cha Hae-young (Yoo In-young)

Played by Yoo In-young

A tenured teacher with wealthy connections who uses her position to gain leverage. She presents a cool, calculating exterior and downplays genuine affection, revealing a willingness to manipulate others to secure her status. Her actions set off the chain of events that lead to the film’s deadly outcomes.
- 💼 Wealth
- 🎭 Manipulation
- 🎯 Power
SJ
Shin Jae-ha (Lee Won-keun)

Played by Lee Won-keun

A male student who becomes the focal point of the teachers’ schemes. He embodies vulnerability and is pulled into the adults’ game for attention and validation. His loyalties shift as the truth emerges, leaving him devastated by the consequences of their actions.
- 👦 Student
- 💔 Vulnerability
- 🧩 Complexity

Setting

Where and When Is Misbehavior Set?

Misbehavior is set in High School, Ballet Studio and Hotel Suite (Present day). Here is why the time and place matter to the story.

When

Present day

The events occur in the present-day setting, reflecting current school life, employment dynamics, and adult relationships within a contemporary social framework. The timeline centers on a single school year, with batch events like contracts and tenure shaping the characters’ choices. The time frame anchors the story in a realistic modern milieu where moral boundaries are tested.

Where

High School, Ballet Studio, Hotel Suite

The story unfolds primarily within a modern high school, including classrooms and hallways that heighten the tension between characters. It also shifts to a ballet studio where the student trains, and to a hotel suite that becomes the setting for pivotal confrontations. These locations together emphasize the social hierarchy, secrets, and private power plays driving the plot.

🏫 High School
🎭 Drama
🏢 Contemporary

Themes

What Are the Themes of Misbehavior?

3 ideas the story keeps returning to, among them Power & Ambition, Toxic Relationships and Violence & Consequences.

01

Power & Ambition

The film probes how ambition and status within a rigid school hierarchy propel its characters into dangerous actions. Hyo-joo’s jealousy toward Cha Hae-young exposes how a longing for prestige can distort judgment and push people toward drastic measures. The pursuit of control over others becomes a central driving force behind the characters’ decisions.
02

Toxic Relationships

A toxic dynamic emerges through a love-triangle involving two teachers and a student, highlighting manipulation and boundary violations. The narrative shows how trust erodes when affection is weaponized for leverage, leaving emotional wreckage in its wake. The relationships reveal how loneliness and power can corrupt intimate connections.
03

Violence & Consequences

The escalating tension culminates in a violent act that upends the lives of all involved. The story demonstrates how deceit and revenge can lead to irreversible outcomes, forcing characters to confront the moral costs of their actions. The aftermath leaves a trail of devastation that echoes through the school.

Tone & mood

What Kind of Film Is Misbehavior?

Dark in tone, with steady pacing and a moderate story, going by the plot summary.

Tone: Dark
Pacing: Steady
Story: Moderate
Intensity: High
Ending: Bleak

A tense and psychologically unsettling drama about toxic relationships and power dynamics, building towards a betrayal-filled climax and a bleak, violent resolution.