What Is Fingernails About?
The premise of Fingernails in 280 words, with nothing given away. The full story and the ending follow below.
In a near‑future where affection has been reduced to a clinical metric, a single fingernail can determine whether two people truly love one another. The newly founded Love Institute has turned this controversial test into a business, offering couples a year‑long program of guided exercises and scientific scrutiny. The institute’s sleek, almost sterile spaces pulse with quiet tension, as participants are urged to confront the hidden layers of their relationships under the watchful eye of researchers who believe that love can be engineered and measured.
Anna, an out‑of‑work schoolteacher, accepts a position as an instructor at the institute, hoping to give her own wavering partnership a chance to survive the looming assessment. She keeps the job hidden from her boyfriend Ryan, whose own doubts about their future are amplified by the institute’s unsettling premise. At the heart of the program is Duncan, the charismatic founder whose optimism about the test’s potential masks a deeper obsession with proof. Among the staff, Amir serves as a senior guide, his confident demeanor and complicated bond with his girlfriend Natasha hinting at the personal stakes that swirl beneath the institute’s polished veneer.
The film unfolds as a slow‑burn examination of intimacy in an age of surveillance, where the line between support and manipulation blurs. Its tone is simultaneously clinical and haunting, inviting viewers to question whether love can ever be quantified without losing its mystery. As Anna navigates the institute’s enigmatic methods and the fragile dynamics of her own heart, she is drawn into an increasingly unsettling environment that forces every character to reckon with what it truly means to be connected—and whether the pursuit of certainty might be the greatest test of all.
What Happens in Fingernails?
The complete story of Fingernails, from the first scene to the last, in 449 words (about 2 minutes). Spoilers throughout. Names in the text link to 4 cast member pages.
Spoilers ahead
Some years before the film, a controversial test costing one fingernail determines whether couples are truly in love. The test has produced largely negative results, fueling a rise in breakups and divorces.
Anna is an unemployed schoolteacher who lands a job as an instructor at the Love Institute, a one-year-old company founded by Duncan, where researchers and instructors guide couples through relationship-strengthening exercises to help them pass the test. Duncan believes that continued research will yield more positive results. Anna initially keeps the hire a secret from her boyfriend Ryan.
Anna shadows Amir, and the two form a rapport as they guide clients through the exercises. Although Amir claims he and his girlfriend Natasha have also passed the test, his fondness for Anna is clear. Meanwhile, Anna secretly runs experiments with an unsuspecting Ryan to test their love. She eventually confesses the job to Ryan, explaining that she feared taking the job would strain their relationship, even though it clearly did.
After Anna first administers a test to a promising client couple, the result is negative, and she is shaken. Amir tells her she’ll get used to it. At a workplace party, Amir’s girlfriend Natasha is puzzled when Anna mentions his gluten intolerance, prompting Anna to question whether she and Amir feel the same way about each other.
On another day, Amir tears out his own fingernail to calm a nervous client. The client couple receives a positive result, delighting everyone. Seizing the opportunity, Anna secretly tests Amir’s fingernail against her own. The result is 50%, meaning one person is more in love with the other. When she asks Duncan if a person can have a positive result with two different people, he rejects the hypothesis. She later convinces a hesitant Ryan to take the test with her again, and they pass.
The next day, Anna confesses her findings to Amir, who confirms his feelings for her when she suggests that he is in love with her, but she does not love him in return. Later that night, Anna and Amir kiss and sleep together. She voices hesitancy about continuing her relationship with Ryan, stating, “Sometimes, being in love is lonelier than being alone.”
Amir reveals that he began working at the Love Institute because he felt something was wrong after never seeing any positive results. When Anna decides she wants to stay with him, Amir says they shouldn’t be together and they must obey the test. She stays over for the night, but awakens to find herself removing more of her fingernails in his kitchen out of heartbreak. Amir stops her and offers comfort. As they wait for her fingers to heal, they share a quiet, hopeful smile.
Fingernails Timeline: Every Key Event in Order
12 key events in the order they happen, from “Anna joins the Love Institute as an instructor” to “Night of heartbreak and a quiet plea for comfort”. 12 events name a place, across 7 locations.
- 1
Anna joins the Love Institute as an instructor
Unemployed schoolteacher Anna accepts a job at the Love Institute, a new company that runs relationship-strengthening exercises. She keeps the hiring secret from her boyfriend Ryan at first, fearing how it could affect him. She begins shadowing Amir and observing how the program operates.
When:Pre-film Where:Love Institute
- 2
Anna builds rapport with Amir and clients
Anna shadows Amir and starts guiding clients through the exercises. She notices Amir’s growing fondness for her and the way he speaks about his own and Natasha’s test results. Their professional dynamic hints at something more complicated beneath the surface.
When:Early in assignment Where:Love Institute
- 3
Anna secretly tests her own relationship with Ryan
Anna keeps her job secret from Ryan while secretly running experiments with him to gauge their love. She hopes the tests might somehow salvage their relationship despite the job’s strain. The deception foreshadows the ethical dilemma she will face.
When:Early in assignment Where:Ryan's home
- 4
First client test yields negative result
Anna tests a promising client couple, but the result comes back negative. She is shaken and disappointed by the outcome, confronting the harsh reality of the test’s bleak statistics. Amir tries to console her, telling her she’ll get used to the disappointment.
When:First test session Where:Love Institute
- 5
Workplace party reveals tensions
At a workplace party, Natasha is confused when Anna mentions Amir’s gluten intolerance, highlighting their complicated dynamic. The moment makes Anna question whether she and Amir share any genuine mutual feelings. The social setting foreshadows the emotional boundaries that will be tested.
When:Workplace party Where:Love Institute party
- 6
Amir shows dedication and a 50% test arises
Amir rips out his own fingernail to comfort a client who is nervous about the procedure, showing his commitment. The client couple receives a positive result, delighting everyone. Anna secretly tests Amir’s fingernail and discovers a 50% result, suggesting one person may be more in love than the other.
When:During sessions Where:Love Institute
- 7
Anna and Ryan pass a second test
Anna convinces a hesitant Ryan to take the test with her again, and they pass. The result reinforces their relationship status, at least outwardly, and gives Anna a false sense of stability. It complicates her growing inner conflict about love and truth.
When:Next day Where:Home / Love Institute
- 8
Anna confesses findings and Amir’s feelings
Anna shares her experimental findings with Amir, who confirms his own feelings for her. He suggests that he might be in love with Anna, but she does not reciprocate. Their confession deepens the emotional tension and sets the stage for a complicated affair.
When:Evening Where:Love Institute / Amir's space
- 9
Anna and Amir kiss and begin an affair
That night, Anna and Amir kiss and sleep together, crossing a line that blurs professional boundaries. Anna expresses uncertainty about staying with Ryan, admitting that love can be lonelier than solitude. The kiss marks a turning point in both of their lives.
When:Night Where:Amir's apartment
- 10
Amir reflects on why he joined the Institute
Amir admits that his motive for joining the Love Institute was his own lack of positive test results and a sense that something was wrong with him. This honesty complicates the relationship as both of them navigate their feelings away from the tests. The revelation explains his earlier defensive stance toward breaking the rules of the program.
When:Later that night Where:Love Institute
- 11
Anna decides to stay with Amir despite the tests
Anna decides she wants to stay with Amir, showing she’s drawn more to him than to the test’s outcomes. Yet Amir urges them not to be together and to obey the test results, creating a tension between desire and rules. The couple’s future becomes precarious as they struggle with what love means if the test decides it for them.
When:Following confession Where:Love Institute / Amir's space
- 12
Night of heartbreak and a quiet plea for comfort
Anna stays over at Amir’s place, but she wakes up and cuts away more of her fingernails in despair. Amir stops her, offering comfort as they face the pain of heartbreak. They wait for her fingers to heal, sharing a fragile moment of mutual support and a guarded smile.
When:Night after confession Where:Amir's kitchen
Who Are the Main Characters in Fingernails?
5 characters, among them Anna (Jessie Buckley), Amir (Riz Ahmed) and Ryan (Jeremy Allen White): who each one is and the part they play in the story. Every profile links to the actor’s page.
-
Anna (Jessie Buckley)
Played by Jessie Buckley
An unemployed schoolteacher who becomes an instructor at the Love Institute. She initially hides her new job from her boyfriend Ryan, and she secretly experiments with the tests to probe her own relationship. As she grows closer to Amir, she faces moral tension between professional duties and personal feelings. Her actions reveal how love can be measured and contested by data.
- 🎭 Complex
- 💔 Romantic tension
- 🧪 Ethical dilemma
-
Amir (Riz Ahmed)
Played by Riz Ahmed
A fellow Love Institute instructor who guides clients through the relationship exercises and becomes drawn to Anna. He has a girlfriend, Natasha, who has also passed the test, but his growing feelings blur the line between work and romance. He displays vulnerability by engaging in the tests, even ripping out his own fingernail to comfort a client, and ultimately decides they should not be together to obey the test.
- 💞 Complex love
- 🧪 Ethical ambiguity
- 😌 Vulnerability
-
Ryan (Jeremy Allen White)
Played by Jeremy Allen White
Anna's boyfriend who is unaware of the full scope of her job at first but becomes a test subject in the Love Institute's program. The couple retakes the test and passes, suggesting renewed commitment, though their relationship is stretched by the Institute's methods and the moral questions they raise about trust.
- 🎭 Drama
- 💞 Romance
- 🔍 Trust
-
Duncan (Luke Wilson)
Played by Luke Wilson
Founder of the Love Institute, a pragmatic entrepreneur convinced that relationship experiments can yield reliable truths about love. He defends the program, pushes for further research, and challenges Anna's transformative findings when she questions the possibility of two different-positive results.
- 💼 Leader
- 🧪 Visionary
- ⚖️ Ethics
-
Natasha (Annie Murphy)
Played by Annie Murphy
Amir's girlfriend who has also passed the fingernail test. She appears in social settings with the institute and contributes to the tension around loyalty and openness in relationships, illustrating how the test affects even those who appear to be successfully 'in love'.
- 🎭 Drama
- 💞 Love
- 🧪 Test-driven dynamics
Where and When Is Fingernails Set?
Fingernails is set in Love Institute. Here is why the place matters to the story.
Where
Love Institute
The Love Institute is a one-year-old company that runs relationship-strengthening exercises for couples through a controlled program and a fingernail-based test. It functions as a clinical lab for modern romance, profiling couples and pushing them to reveal the authenticity of their feelings. The setting is clinical and charged with the tension between scientific measurement and human connection.
- 🏢 Love Institute
- 🧪 Relationship experiments
- 💔 Breakups and heartbreak
What Are the Themes of Fingernails?
3 ideas the story keeps returning to, among them Tests and Love, Heartbreak and Ambiguity.
-
01
Tests and Love
The fingernail test and related exercises frame love as measurable data, driving couples apart or together. The institute's method reveals how desire and commitment can be distorted by a clinical instrument. Characters wrestle with whether truth comes from science or from the heart, and Anna's experiments push ethical boundaries.
-
02
Heartbreak
As test results matter more than sentiment, relationships fracture when people fear loss or betrayal. Anna's pursuit of truth leads to personal pain and lonely choices, including harming herself to reveal feelings. The film portrays the loneliness of loving someone under the gaze of a test.
-
03
Ambiguity
Romance and reliability collide as two people can pass a test with different partners. The line between professional duty and personal desire blurs, leaving characters unsure about what love really requires. The test creates a maze of possibilities, where outcomes may contradict true connection.
How Does Fingernails End?
The last act of Fingernails and what it means, in 325 words. The ending lands as bittersweet. Big spoilers: read the plot summary first if you have not seen it.
The final act, in full
In the film “Fingernails,” Anna’s journey ultimately reveals that love cannot be fully captured or measured by technology, no matter how advanced it seems. Throughout the story, Anna undergoes tests that analyze her feelings through her fingernails, which tell her how much she loves Ryan, her long-term partner, and how she might feel about Amir, the co-founder of the institute. She learns that her feelings for Ryan are strong—100%—which suggests she still loves him, but her heart is telling her otherwise. Her test results with Amir, which show only 50%, indicate that her love for him is uncertain and incomplete. This discrepancy leads her to question the reliability of the machines and the science of love itself.
Anna’s internal conflict reaches a breaking point when she realizes that the feelings she experiences are real and instinctive, and they can’t be fully understood or validated through science alone. She has an emotional pull towards Amir, which is evident in her actions and the deep connection she shares with him, despite the machine’s uncertainty. Her decision to pull out her fingernails—a painful act—symbolizes her rejection of the artificial attempt to quantify love. It’s her way of asserting that love is a deeply personal and visceral experience that cannot be dictated by tests or technology.
In the final moments, Anna chooses to follow her heart rather than trust the data. She stops trying to analyze her feelings and instead embraces her emotional instincts. Whether she will end her relationship with Ryan or pursue something with Amir is left unresolved, but her act of removing her fingernails signifies her rejection of scientific validation in favor of emotional truth. The ending suggests that love is ultimately mysterious and subjective, and while science can attempt to measure it, it can never fully understand the depth and complexity of human feelings. Anna’s act of pulling out her fingernails is a poignant declaration that love is something that must be felt, not tested.
What Kind of Film Is Fingernails?
Melancholic in tone, with slow pacing and a moderate story, going by the plot summary.
- Tone
- Melancholic
- Pacing
- Slow
- Story
- Moderate
- Intensity
- Medium
- Ending
- Bittersweet
A quietly intense and melancholic sci-fi drama that explores the unsettling nature of quantifying love, creating a mood of profound uncertainty and quiet heartbreak with a glimmer of cautious hope.
- melancholic
- uncertain
- introspective
- quiet
- longing
- tense
- love and relationships
- scientific testing
- emotional infidelity
- existential doubt
Content notes: self harm, emotional manipulation.
Quiz
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Where to Watch Fingernails
Stream it on Apple TV. US availability and prices from JustWatch.
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