Directed by

Damián Romay
Made by

Sunshine Films
Test your knowledge of My Teacher, My Obsession with our quiz!
Read the complete plot summary and ending explained for My Teacher, My Obsession (2018). From turning points to emotional moments, uncover what really happened and why it matters.
Riley [laura-bilgeri] is a high school senior who begins her first day at a new school, accompanied by her father, Chris, the school’s newest English teacher. From the very start, their arrival stirs up attention and curiosity amongst students and staff alike. During his first lesson, Chris immediately catches the eye of two key students: Tricia, played by Alexandria Deberry, a popular girl with a confident attitude, and Kyla, portrayed by Lucy Loken, a troubled yearbook photographer who becomes deeply infatuated with him.
Kyla’s fascination with her teacher grows quickly; after school, she befriends Riley and shares her background story — revealing that her mother, Jess, was unfaithful, which led to her parents’ divorce. Later that evening, Kyla dreams vividly of Chris, hinting at her obsessive feelings, and begins to develop an intense attachment.
The following day, Tricia approaches Riley, warning her about Kyla, suggesting that she has a history of seducing teachers — including a rumored affair with a history teacher the previous year. Meanwhile, Kyla’s envy intensifies when she witnesses her mother, Jess, prepping for a date with Chris. Kyla’s jealousy fuels her to sabotage their plans, resulting in Chris spending the night at her house, which temporarily puts her closer to her goal of being near him.
As tensions build, Kyla confronts Riley over her friendships and decisions, accusing her of being manipulated by Tricia to get close to Chris. Riley insists Tricia’s claims about her are false, defending her own choices. Later, Kyla, feeling betrayed and hurt, threatens Tricia, demanding she leave Riley alone, but Tricia dismisses her threats.
Kyla’s mounting emotional distress leads her to fill her locker with provocative photos of herself, revealing her vulnerabilities. She confides in Chris, claiming she is being harassed, and he promises to help uncover the truth. Their relationship begins to blur boundaries as they reconcile, and Kyla eventually admits to having slept with her history teacher, claiming he manipulated her into it.
One night, Kyla, pretending to be Tricia, menaces Chris with sexually suggestive texts from her phone, which Jess misinterprets as infidelity. Furious and hurt, Jess throws Chris out. Later, Kyla seduces him in his truck and kisses him, further escalating the tension. That same night, police arrive to arrest Tricia, who was found with the messages and photos on her locker, exposing Kyla’s involvement.
At Riley’s birthday party, the situation turns darker as Kyla sneaks into Chris’s office and seduces him again, leading to a sexual encounter that Riley discovers, leaving her heartbroken and running away in distress. In the aftermath, Jess confronts Chris, informed of the truth, and takes Kyla away. Chris apologizes to Riley, reassuring her that he will cut ties with Kyla and focus on rebuilding their relationship.
The tension continues when Kyla calls Tricia, revealing she has framed her, and in a moment of desperation, harms herself by breaking her fingers. When Riley and Chris arrive at the hospital, Riley confronts Kyla about the state of her relationship with her father. Kyla claims she is of legal age and that her love for Chris is genuine, asserting that their relationship is meant to be. Despite her pleas, Chris firmly states his decision to end it, leaving Kyla desperate and angry.
Determined to be with Chris, Kyla declares she will never leave him, and her obsession manifests in violence. She takes a scalpel from the hospital and leaves, setting the stage for a chilling confrontation. At school, she confronts Riley and, in a violent act, stabs her. She then storms into Chris’s classroom, holding the scalpel to his throat and professing her love, claiming that she was the manipulator all along. Despite Chris pushing her away, Kyla trips him and causes him to hit his head, rendering him unconscious.
A janitor finds Kyla feigning injury and asks her to seek help, but meanwhile, she kills him in a brutal attack. Riley, despite her injuries, manages to fight back and overpowers Kyla, who is eventually subdued. As police arrive, both Riley and Kyla are taken away in separate ambulances.
In the aftermath, Riley is preparing to leave for college, bidding farewell to her father in a quiet, poignant moment. As they part ways, an ominous figure cloaked in a hood watches from afar, hinting that the story may not be entirely over.
This film underscores themes of obsession, manipulation, and the dangerous fallout of unchecked emotions, weaving a suspenseful narrative that keeps viewers on the edge from beginning to end.
Follow the complete movie timeline of My Teacher, My Obsession (2018) with every major event in chronological order. Great for understanding complex plots and story progression.
First Day at the New School
Riley and her father, Chris, arrive at the new school on Riley's first day. Chris starts his role as the school's new English teacher, and during his first lesson, he attracts attention from students including Tricia and Kyla. The day sets the stage for the complex relationships to unfold.
Kyla Befriends Riley
After class, Kyla befriends Riley and asks to come over for a study session, revealing her interest in Riley and her family background. At Kyla’s house, Riley talks about her parents' divorce caused by her mother's infidelity, exposing her personal history.
Kyla Develops Infatuation
That night, Kyla dreams of Chris and becomes infatuated with him, indicating her romantic obsession is growing. Her feelings are rooted in her admiration, which begins to border on obsession.
Tricia Warns Riley
The next day, Tricia befriends Riley and warns her that Kyla is dangerous because of her past relationships with teachers. She hints at Tricia's own history with a previous teacher, creating tension among the students.
Kyla’s Jealous Sabotage
Kyla sabotages Tricia’s date with Chris by spying on them as her mother, Jess, toys with Chris. Kyla’s jealousy is clear as she manipulates the situation to keep Chris close, leading to Chris spending the night at her house.
Confrontation Over Tricia
Kyla confronts Riley about her relationship with Tricia, accusing her of being manipulated by Tricia to get to her father. Riley defends herself, but the tension escalates as Kyla's obsession becomes evident.
Kyla Threatens Tricia
Kyla threatens Tricia to stay away from Riley, warning her that she won't back down. Tricia remains defiant, refusing to be intimidated, and the conflict between the girls intensifies.
Kyla Manipulates Chris
Kyla, posing as Tricia, sends sexually suggestive messages to Chris and later seduces him, causing misunderstandings with his girlfriend Jess. When Jess finds out, she kicks Chris out, escalating the situation.
Kyla’s Self-Harm and Framing
Kyla admits to framing Tricia and harms herself by breaking her fingers, trying to manipulate the situation. She later falsely claims to have been attacked to get sympathy, leading to Tricia's arrest and her hospitalization.
Riley Confronts the Reality
Riley tells Kyla that her relationship with her father is over, and Kyla insists they are in love and will be together. Chris promises to cut ties with Kyla, and Riley forgives him, attempting to move forward.
Kyla’s Desperate Revenge
Kyla calls Tricia and admits to framing her, then harms herself with a scalpel. She manipulates the situation to get close to Chris again, speaking of her desire to be with him despite their circumstances.
School Confrontation and Violence
At school, Kyla confronts Riley and stabs her in the stomach, then holds a scalpel to Chris’s throat. She fights with Riley, kills a janitor, and ultimately gets subdued after a tense struggle.
Police Arrival and Aftermath
Police arrive as Riley, badly wounded, and Kyla are taken away in separate ambulances. Riley survives the attack, and the traumatic event leaves everyone affected, highlighting the tragic culmination of Kyla’s obsession.
Riley’s Future Departure
Some time later, Riley is seen leaving for college, saying goodbye to her father. An unseen figure watches them from afar, hinting at lingering danger or unresolved issues from the events.
Explore all characters from My Teacher, My Obsession (2018). Get detailed profiles with their roles, arcs, and key relationships explained.
Riley (Laura Bilgeri)
A high school senior navigating new environments and complex personal relationships. She shows resilience and vulnerability, especially after discovering her father’s involvement in her personal life. Her journey is about healing from betrayal and moving forward.
Chris (Rusty Joiner)
A well-meaning English teacher caught in a dangerous obsession with one of his students. His character struggles with morality and the consequences of his actions, ultimately seeking to escape the toxic situation.
Kyla (Lucy Loken)
A troubled young girl whose infatuation with her teacher devolves into manipulation and violence. She exhibits obsessive traits and is deeply influenced by her emotional turmoil, leading her to dangerous extremes.
Tricia (Alexandria Deberry)
A popular student whose flirtations and reputation for seducing teachers place her at the center of the social conflict. She is cunning and resilient, yet becomes a target of Kyla’s wrath.
Jess (Theresa Sutera)
Kyla’s mother, who is involved in the family and personal conflicts. She is protective but also blindsided by Kyla’s manipulations, reflecting the challenges of fractured parental relationships.
Learn where and when My Teacher, My Obsession (2018) takes place. Explore the film’s settings, era, and how they shape the narrative.
Time period
Present Day (contemporary)
The film takes place in the current era, reflecting modern teenage life with social media, texting, and contemporary cultural references. The events unfold over a span of days, centering around high school life, personal relationships, and urgent crises, typical of present-day youth drama.
Location
High School, Riley's House, Hospital, School Campus
The movie is set primarily in a high school environment, capturing the typical setting for teenage social drama and conflicts. Riley's house functions as a private space for personal revelations and relationship developments. The hospital scenes highlight moments of crisis, while the school campus is the battleground for intense confrontations. These locations reflect a suburban or small-town setting common in teen dramas.
Discover the main themes in My Teacher, My Obsession (2018). Analyze the deeper meanings, emotional layers, and social commentary behind the film.
🔪
Obsession
The central theme revolves around unhealthy obsession and manipulation, with Kyla’s fixation on Chris driving her to dangerous extremes. The film explores how obsession can distort reality and lead to violence, especially within the context of teenage infatuation and dangerous love.
⚖️
Power and Control
The movie examines the struggle for control in relationships, highlighting manipulation, jealousy, and the desire for dominance. Kyla’s actions reflect her attempts to manipulate others to achieve her perceived happiness, resulting in tragic consequences.
💔
Broken Families
The narrative touches on fractured familial relationships, such as Riley’s parents’ divorce and Kyla’s troubled history with her teacher. These themes underline the fragility of family bonds and how personal struggles influence teenage development.

Coming soon on iOS and Android
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.
Discover the spoiler-free summary of My Teacher, My Obsession (2018). Get a concise overview without any spoilers.
In a cramped suburban high school, Riley steps onto the hallway for the first time, her life already tangled in an unusual knot: her father, Chris, has just begun teaching English at the very school she now attends. The dual role of parent and educator casts a quiet, uneasy light over the daily routine, turning every classroom glance and hallway exchange into a subtle negotiation of boundaries. The campus buzzes with typical teenage chatter, yet beneath the lockers and lockers’ rustle lies an undercurrent of curiosity and speculation about the new family that has arrived together.
Seeking a foothold in this unfamiliar world, Riley quickly aligns herself with Kyla, a talented yearbook photographer whose quiet demeanor masks a deeper intensity. Kyla shares fragments of a troubled past that hint at a yearning for connection, and her fascination with Chris becomes unmistakable, threading a delicate tension through the trio’s interactions. While Riley hopes the friendship will smooth her transition, the shadow of Kyla’s fixation begins to color every shared moment, turning simple conversations into a chess game of unspoken motives.
The film settles into a tone that blends the ordinary anxieties of high‑school life with a slow‑burning, psychological edge. The corridors feel both familiar and foreboding, the fluorescent lights casting a sterile glow over relationships that are anything but straightforward. As Riley discovers the depth of Kyla’s obsession, a silent alarm sounds for her and her father, urging both to navigate a precarious balance between protecting family ties and confronting an emerging, unsettling desire.
Against this backdrop of adolescent uncertainty and parental responsibility, the story teeters on the brink of revelation. The audience is drawn into a quiet suspense, wondering whether Riley can shield her father from the growing intensity that threatens to upend their new beginning, all while the high‑school setting hums with the promise of hidden storms.
Can’t find your movie? Request a summary here.
Uncover films that echo the narrative beats, emotional arcs, or dramatic twists of the one you're exploring. These recommendations are handpicked based on story depth, thematic resonance, and spoiler-worthy moments — perfect for fans who crave more of the same intrigue.
What's After the Movie?
Not sure whether to stay after the credits? Find out!
Explore Our Movie Platform
New Movie Releases (2026)
Famous Movie Actors
Top Film Production Studios
Movie Plot Summaries & Endings
Major Movie Awards & Winners
Best Concert Films & Music Documentaries
Movie Collections and Curated Lists
© 2026 What's After the Movie. All rights reserved.