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Instinct (2018) Plot Summary & Timeline

Instinct (2018) movie poster

Instinct is a 2018 horror and thriller film directed by Maria Alice Arida. This page retells the whole story in 716 words (about 3 minutes to read) and covers 15 key events in order, 5 characters, where and when it is set and 3 themes. Looking for the cast, ratings and where to stream it? See the movie page for Instinct.

to read the plot summary
3 min
key events in the timeline
15
characters profiled
5
themes explained
3
Instinct (2018) movie poster
Released
Genres
Horror, Thriller
Original language
English
Studio
AFI
No spoilers

What Is Instinct About?

The premise of Instinct in 260 words, with nothing given away. The full story follows below.

In the stark, clinical environment of a prison hospital, Nicoline arrives as a temporary replacement, bringing with her a composed demeanor and a sharp professional instinct. A highly regarded therapist between positions, she steps into a role that demands both objectivity and empathy, tasked with evaluating inmates nearing the end of their sentences. The unit operates on routine and cautious optimism, but Nicoline’s arrival introduces a more probing energy—one that questions the assumptions others have comfortably settled into.

Among her caseload is Idris, an inmate whose charm and apparent progress have convinced many of his readiness for unsupervised parole. He speaks easily, offers what listeners want to hear, and moves through the institution with a disarming ease that unsettles Nicoline in ways she cannot fully articulate. Where her colleagues see growth and transformation, she detects something harder to define—a glint of calculation behind the warmth, a pattern of persuasion that feels rehearsed rather than earned.

The relationship that develops between therapist and patient is defined from the start by mutual wariness and unspoken challenges. Nicoline’s professional boundaries are tested by Idris’s keen perceptiveness, while her personal life begins to blur under the weight of her growing fixation on understanding the man behind the charm. As the stakes of her assessment rise, so too does the psychological tension between duty and doubt, control and vulnerability. The film maintains a restrained, unsettling tone throughout, inviting viewers into the uneasy space where clinical judgment meets human complexity, and where the line between care and coercion proves far more fragile than it first appears.

Full plot

What Happens in Instinct?

The complete story of Instinct, from the first scene to the last, in 716 words (about 3 minutes). Spoilers throughout.

Spoilers ahead

Nicoline, a single and highly regarded prison therapist who is between jobs, takes a temporary post at a prison hospital, stepping in to handle the caseload left by a counsellor who resigned. Her arrival brings a cooler, more clinical energy to the unit, and she soon encounters Idris, a charismatic inmate with a troubling history of sexual violence who is nearing the point of unsupervised parole. The majority of Nicoline’s colleagues are confident in Idris’s progress and comfortable granting him trial periods of unsupervised leave, but Nicoline is uneasy. She sees in him a gleaming charm and a tendency to say what people want to hear, and she notes little signs that trigger alarms in her professional judgment—signs that others seem to overlook.

From their first tense interactions, the relationship is defined by distrust and tension. Idris asks to switch counselors, a move Nicoline rejects, accusing him of trying to pry into her personally and read her attractions. A night out with a coworker, Alex, ends with an improvised, intoxicated sexual encounter that complicates the professional boundaries at play. At work, Nicoline uses a threat of an indefinite stay to test Idris’s reactions, while she continues to challenge her colleagues’ rosy assessments of his trajectory, arguing that Idris’s easy charm often masks his manipulative behavior.

Over time, Nicoline finds herself increasingly preoccupied with Idris, tracing small details and visiting places he has mentioned, like a fast food chain he spoke about. She also tries to salvage a romance with Alex by showing up at a prison basketball game, but Idris’s presence and the broader tensions around him keep intruding on that budding relationship. This obsession bleeds into her professional life, and her doubts about her role intensify, though her boss remains unswayed by her concerns. On Idris’s first unsupervised trip, Nicoline secretly follows him to a remote beach, where the conversation stalls and Idris seems to gauge what she wants while offering nothing definitive in return.

Back home, the strain of the case spills into Nicoline’s family life, especially her relationship with her mother, which becomes more fragile as the situation grows more complicated. Nicoline initially tries to end the arrangement, but Idris reacts with anger and withdraws, even lashing out at a rabbit he cared for. Later, in an empty gym, Idris proposes switching counselors, and in a moment of charged tension, the pair share a kiss. The act unsettles Nicoline—she begins to doubt her own judgments and leans into a dissociative state, unsure how to proceed. When she attempts to consult her boss, she finds only an empty office, leaving her to confront the spiraling circumstances on her own.

Her intern, Marieke, eventually reveals secrets about Idris that Nicoline already suspects and acknowledges that she herself has sought him out in the past—visits to different fast food chains that make Nicoline feel foolish about her fixation. In an effort to regain control, Nicoline tries to restore order in her life, cleaning her apartment and attempting to create boundaries. Idris reappears, pressing to date her again after his release, and a tense late-night confrontation unfolds when a doorbell rings and Nicoline hesitates to answer. She confesses fear, and a heated argument follows, culminating in a devastating moment of exploitation: Idris rapes her.

In the aftermath, Nicoline returns to Idris’s cell and, in a disturbing turn, goads him into a moment of closeness outside the camera’s view. She then triggers her emergency alarm, prompting guards to intervene and remove Idris, who is implicated in the assault. The film closes with Nicoline alone in Idris’s bed, lingering in a fragile calm before she rises and walks away, leaving the room with a quiet sense of unresolved aftermath.

  • The narrative unfolds with a stark, restrained tone that centers on the psychological tension between a trained professional’s obligation to protect and the dangerous pull of a patient who tests every ethical boundary.
  • Themes of power, control, obsession, and the perilous line between care and coercion are explored through Nicoline’s escalating fixation and the precarious assumptions surrounding Idris’s parole prospects.
  • The story emphasizes how personal longing and professional duty can collide in ways that reveal the limits of judgment under pressure, leaving viewers to weigh the complexities of accountability, consent, and the consequences of crossing professional boundaries.
Timeline

Instinct Timeline: Every Key Event in Order

15 key events in the order they happen, from “Nicoline begins her new job at the prison hospital” to “Final confrontation and ending”. 15 events name a place, across 12 locations.

  1. 1

    Nicoline begins her new job at the prison hospital

    Nicoline, a single woman and a renowned prison therapist, begins work at the prison hospital and takes over the caseload of a counselor who has resigned. She is between jobs and not seeking full-time employment, which colors her cautious approach. This marks the start of her uneasy immersion into Idris's case.

    When:Early in the film Where:Prison hospital

  2. 2

    Nicoline meets Idris

    Nicoline meets Idris, a charismatic inmate with a troubling history of violence. He uses charm to mask his dangerous nature, challenging her professional boundaries from the outset. The encounter sets the tone for their fraught working relationship.

    When:Early in the film Where:Prison hospital

  3. 3

    Colleagues approve trial unsupervised leave

    Most of Nicoline's coworkers are confident Idris can handle unsupervised leave on a trial basis, praising his apparent compliance. Nicoline does not share their optimism and gradually questions the data underpinning the positive assessment. Tension grows around Idris's trajectory.

    When:Soon after first meeting Where:Prison unit

  4. 4

    Idris demands a switch; Nicoline resists

    Idris asks Nicoline to switch to another counsellor, implying a desire for personal access. Nicoline rejects the move, accusing him of trying to manipulate the situation and cross boundaries. The power dynamic between them deepens.

    When:Soon after Where:Counsellor's office

  5. 5

    Nicoline and Alex share a drunken night

    On a night out, Nicoline and her coworker Alex become intimate and have sex while intoxicated. The encounter complicates Nicoline's professional judgment and blurs lines between work and personal life. It foreshadows further personal turmoil linked to Idris.

    When:Night Where:City bar/streets

  6. 6

    Nicoline threatens indefinite stay to provoke a response

    Back at work, Nicoline threatens Idris with an indefinite stay to gauge how he would react. The tactic is a direct challenge to his self-control and to the institution's assessment of him. It foreshadows how fragile boundaries will become.

    When:Shortly after Where:Counsellor's office

  7. 7

    Obsession grows; she follows hints about a fast-food chain

    Nicoline becomes increasingly obsessed, scrutinizing details about Idris's life, including a fast-food chain he mentioned. She tracks these clues, trying to map his world beyond the counseling room. The fixation signals a dangerous drift from professional boundaries.

    When:Over time Where:City / various

  8. 8

    Her attempt to balance Alex and Idris during a basketball game

    Nicoline struggles to maintain her relationship with Alex, visiting him at a prison basketball game while Idris's presence casts a shadow. Her colleagues notice the strain and warn of Idris's influence. The balance between personal need and professional duty becomes increasingly unstable.

    When:During the basketball game Where:Prison gym / game

  9. 9

    First unsupervised trip leads to a beach encounter

    Idris's first unsupervised trip takes Nicoline to a local beach, where they end up at a remote spot. The stand-off on the shore reveals how little Nicoline still understands Idris and how far he will go to control the narrative. The setting intensifies the power play between them.

    When:First unsupervised trip Where:Local beach

  10. 10

    Tension erupts: Idris leaves in anger after a tense moment

    Nicoline tries to end the arrangement, triggering Idris's anger, and he leaves abruptly. A rabbit he cared for earlier is killed in the fallout, a disturbing symbol of his volatility. Nicoline's fear about Idris deepens as her personal and professional worlds collide.

    When:After the beach tension Where:Remote beach

Show the other 5 events of Instinct
  1. 11

    Kiss in the empty gym and Nicoline’s disassociation

    In an empty gym, Idris and Nicoline kiss, crossing a critical boundary. The moment triggers Nicoline's dissociation, leaving her unsure how to proceed. Her boss's absence prevents immediate guidance.

    When:Following the kiss Where:Empty gym

  2. 12

    Intern Marieke exposes Idris's secrets

    Nicoline's intern Marieke reveals secrets about Idris, confirming things Nicoline already suspected and noting another visit to a fast-food place. The revelation intensifies Nicoline's self-questioning and exposes her own susceptibility. It makes her realize she may not be alone in her fixation.

    When:Between events Where:Nicoline's office

  3. 13

    Nicoline attempts to regain control at home

    Nicoline tries to restore order in her life, cleaning her apartment while Idris visits and pushes for dating after release. She remains afraid, but the fear collapses boundaries she previously maintained. The dynamic teeters on the edge of collapse.

    When:Later Where:Nicoline's apartment

  4. 14

    Idris rapes Nicoline

    Idris takes advantage of Nicoline's shaky psychological state and rapes her. The assault marks a brutal shift in power and trust, intensifying the danger she faces. The line between victim and investigator becomes even more blurred.

    When:Later Where:Nicoline's apartment

  5. 15

    Final confrontation and ending

    Idris rapes Nicoline, exploiting her vulnerability. Later, Nicoline returns to Idris's cell and goads him into making out out of camera view, then triggers the alarm to summon the guards. Idris is taken away, and the film ends with Nicoline lying in Idris's bed before she gets up and leaves, a calm but unsettled mood lingering.

    When:End Where:Idris's cell

Characters

Who Are the Main Characters in Instinct?

5 characters, among them Nicoline, Idris and Marieke: who each one is and the part they play in the story.

  • N

    Nicoline

    A renowned prison therapist between jobs who reluctantly takes a position at a prison hospital. She grows skeptical of Idris’s release and becomes consumed by a need to control or understand him. Her boundary-testing obsession strains her professional judgment and personal relationships, including with her mother.

    • 🧭 Boundary
    • 💡 Psychology
    • 🔒 Power
  • I

    Idris

    A charismatic convict with a history of sexual violence whose charm masks manipulation and volatility. He pushes against supervisors and uses personal appeal to test Nicoline’s resolve. His behavior destabilizes the treatment team and drives the central conflict.

    • 🔥 Charisma
    • 🪝 Manipulation
  • M

    Marieke

    Nicoline's intern who reveals secrets about Idris, triggering tension and doubt about Nicoline’s own perceptions. She acts as a catalyst for important disclosures and complicates Nicoline’s investigation.

    • 🕵️ Secrets
    • 🗣️ Disclosure
  • A

    Alex

    Nicoline’s coworker with whom she becomes entangled romantically, adding a layer of personal conflict to an already tense professional environment. His presence heightens the stakes for Nicoline’s decisions.

    • 💔 Romance
    • 🗨️ Workplace
  • NM

    Nicoline's mother

    Her relationship with Nicoline becomes strained as Idris’s influence grows, highlighting the personal costs of Nicoline’s obsessive involvement with her case.

    • 👩‍👧 Family
    • 🌡️ Tension
Setting

Where and When Is Instinct Set?

Instinct is set in Prison hospital, local beach, gymnasium and Nicoline's apartment. Here is why the place matters to the story.

Where

Prison hospital, local beach, gymnasium, Nicoline's apartment

Most of the story takes place inside a prison hospital where Nicoline works, but the setting expands to the prison complex’s corridors, a gymnasium, and her own apartment. The remote beach scene later reveals a more unsettled, personal landscape where power and desire spill beyond professional walls. Scenes at a local fast-food chain and other staff spaces underscore the claustrophobic, controlled atmosphere that frames the characters’ interactions.

  • 🏢 Prison complex
  • 🧭 Boundaries
  • 💡 Psychology
Themes

What Are the Themes of Instinct?

3 ideas the story keeps returning to, among them Power Dynamics, Obsession and Consent and Coercion.

  1. 01

    Power Dynamics

    The film centers on uneven power between Nicoline, a therapist, and Idris, a convicted killer whose charm masks manipulation. Nicoline's professional authority is stretched as she questions her colleagues' confidence in Idris's unsupervised parole. The story uses clinical language and hospital settings to show how trust can be exploited. Boundaries blur as authority becomes a weapon in a tense psychological chess game.

  2. 02

    Obsession

    Nicoline's fixation on Idris grows from initial suspicion to a consuming preoccupation that clouds judgment. The pursuit of personal connection distorts her professional work and leads to risky decisions. Her obsession isolates her from friends, family, and colleagues, intensifying the dangerous dynamic at play. The line between care and control becomes dangerously blurred.

  3. 03

    Consent and Coercion

    The narrative centers on coercive dynamics that culminate in sexual violence, prompting questions about true consent within an imbalanced power structure. Nicoline’s attempts to control Idris backfire, highlighting how manipulation can masquerade as care. The film scrutinizes the ethics of supervision, boundaries, and accountability in professional settings. Ultimately, consent is depicted as compromised by intimidation, charm, and authority.

Tone & mood

What Kind of Film Is Instinct?

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

Tone
Tense
Pacing
Steady
Story
Moderate
Intensity
High
Ending
Ambiguous

A tense and unsettling psychological thriller that builds a claustrophobic atmosphere of professional obsession and ethical collapse, culminating in a disturbing violation and ambiguous aftermath.

  • tense
  • anxious
  • unsettling
  • claustrophobic
  • obsessive
  • disturbing
  • professional ethics
  • sexual assault
  • power dynamics
  • psychological manipulation

Content notes: sexual assault, psychological manipulation, trauma.

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FAQ

Instinct Plot Questions

5 quick answers about Instinct, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is Instinct about?

In the stark, clinical environment of a prison hospital, Nicoline arrives as a temporary replacement, bringing with her a composed demeanor and a sharp professional instinct.

Read the full plot summary

When and where does Instinct take place?

Instinct is set in Prison hospital, local beach, gymnasium and Nicoline's apartment. Most of the story takes place inside a prison hospital where Nicoline works, but the setting expands to the prison complex’s corridors, a gymnasium, and her own apartment.

The setting explained

Who are the main characters in Instinct?

The story follows Nicoline, Idris, Marieke and Alex; the character guide covers 5 characters in all.

All the characters

What are the main themes of Instinct?

The summary picks out 3 themes: Power Dynamics, Obsession and Consent and Coercion.

The themes explained

Who directed Instinct?

Instinct (2018) was directed by Maria Alice Arida.

Maria Alice Arida’s films

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