Directed by

Ursula Meier
Made by

Adopt Films
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Read the complete plot summary and ending explained for Sister (2012). From turning points to emotional moments, uncover what really happened and why it matters.
In a quiet, wintry corner of Switzerland, a twelve-year-old boy named Simon navigates a harsh streetwise world that sits just beneath the surface of a luxurious ski resort. He survives by stealing equipment from skiers, then refurbishing and selling it to make enough money to feed himself and, more importantly, to support his older sister Louise, who uses his labor to fuel a lifestyle she can’t sustain on her own. Louise is charming yet reckless, unable to hold down a steady job and frequently disappearing with men, leaving Simon to shoulder the burden and the consequences of their shared life.
Simon’s days are spent straddling two lives: the quiet, wary reality of a boy who covers for a sister who never truly grows up, and the riskier, more dangerous world of petty crime that keeps their tiny, fragile economy afloat. He thoughfully tries to teach Louise how to refurbish the skis he salvages, but she remains disinterested and self-centered, losing interest as soon as a new distraction appears. Her latest romance with Bruno brings a brief sense of normalcy, yet it only deepens the tension in their already fractured household. When Bruno asks where Simon “lives,” Simon answers with a startling honesty that reveals the truth about their bond: the boy tells him he lives “with my parents” and that they have a “fucked-up family,” a moment that foreshadows the dangerous fractures in their lives. > “with my parents” and that they have a “fucked-up family.”
A chance encounter with Kristin, a tourist, marks a turning point. Simon helps her with her son’s equipment and introduces himself as Julien, spinning a story about being alone because his parents run a hotel. He soon crosses paths with Mike, a resort employee who catches him hoarding stolen skis. Rather than punish him outright, Mike offers a grudging, practical partnership: Simon can keep taking the gear, and in return, Mike provides a place to store it. The arrangement is uneasy, built on a shared need to survive, and Simon spins more lies to cover his tracks, even as he maintains a bright, hopeful sense that this alliance could stabilize his life. To his new ally, he explains his parents’ death in a car accident and the loneliness that follows, a claim that earns him a fragile trust and a place in the resort’s shadow economy.
When Louise returns from a trip with Bruno, the dynamics sour again. She tells Bruno that Simon is staying with them temporary, but the truth is far more complicated. The two drive around as Louise hunts for work and tries to keep up appearances, while Simon quietly observes the flirtation and finalizes a plan to keep the life he’s built intact. The moment of exposure comes when Bruno asks about their living situation, and Simon’s effort to maintain the lie collapses into a brutal honesty: Louise is his mother, not his sister. The revelation destabilizes their fragile arrangement. Louise tries to insist this is something she would eventually confess, but Bruno’s reaction is blunt and defining: he drives them out, and the pair must walk home, the truth shadowing their every step. Louise tries to control the narrative, insisting that Simon should stay away from her adult life, even as she admits she keeps him primarily because she does not want to be lonely or to admit how hard it is to be a single parent. The weight of this truth lands heavy on both of them.
That night, Simon pays Louise to sleep in her bed, a stark symbol of how their relationship has warped: he is a boy seeking security, and she uses him to stave off loneliness and judgment. After he falls asleep, Louise slips out and booze takes over, ending with her found unconscious the next morning. Simon, ever the caretaker, carries her home with help from neighbors, realizing that she has spent all their money. To replace what’s been spent, Simon tries a dangerous gambit, bringing a much younger child to the resort to trade for equipment. Mike rejects this escalation, and Simon’s hidden stash is discovered, resulting in his expulsion from Mike’s network. He clings to the equipment and continues to steal purses from changing rooms, but all he finds are small coins, a sign that the plan to sustain them is failing. His hidden gear is found, and the partnership between Simon and Mike dissolves in a sharp, practical rebuke; the young boy is left with nothing but the record of his losses.
With no reliable income, Simon turns to old customers for scraps of food, which Louise reluctantly shares, even as she secures a new cleaning job at a chalet and tries to maintain distance from any debt to him. Their trajectory intersects once more with Kristin, who discovers that Simon has lied about who he is. He apologizes, but Kristin’s disappointment is palpable, and she separates herself from their tangled world. Later, a watch goes missing, a small reminder of how quickly trust evaporates. Louise refuses to believe Simon when he turns out his pockets and reveals the truth, and a confrontation with Kristin follows. The tensions crescendo toward a moment of truth: Louise is furious that Simon’s actions have endangered her ability to land a job, and she lashes out as the season ends.
As the resort winds down for the season, the staff pack up for new jobs elsewhere. Simon asks if he can come along, but his youth is a clear barrier, and he is turned away. He rides the cable car down alone, passing Louise as she ascends. The two cars pull apart, and the final image is a quiet, aching separation—two people bound by a fragile, dangerous dependence, each glancing back at the other as the world around them shifts from the warmth of the resort to the uncertain cold beyond.
This film threads together themes of poverty, loyalty, and resilience in a starkly observational, emotionally restrained manner. It invites viewers to consider how a child’s quiet endurance can both sustain and imperil those around him, and how the choices people make when money and affection are at stake can tighten or loosen the bonds of family—whether that family is defined by blood or by shared survival.
Follow the complete movie timeline of Sister (2012) with every major event in chronological order. Great for understanding complex plots and story progression.
Simon funds their life by stealing ski gear
Simon, a twelve-year-old, funds their life by stealing ski equipment from resort guests. He refurbishes the gear and sells it to buy food and pay for Louise's lifestyle. This illicit routine places him in a caretaker role for his older sister.
Louise's unstable lifestyle and neglect
Louise is selfish and unreliable, frequently leaving Simon alone while she pursues relationships or freeloads off men. She struggles to hold down a job and seems indifferent to Simon's hard work. Their dynamic is strained as she uses him to prop up her lifestyle.
Simon helps Kristin and meets the tourist
Simon helps Kristin with her son's equipment and introduces himself as Julien. They have lunch together and Kristin pays the bill, which surprises him since he normally has to contribute. He learns that kindness from strangers can be rare.
Mike catches Simon; a bargain is struck
Mike, a resort employee, catches Simon hoarding skis. They strike a bargain: Mike provides a storage space in exchange for some of the equipment. The deal gives Simon a way to store his stolen goods while continuing the theft to make money.
Louise returns with Bruno; a car ride leads to a secret
Louise returns from her trip with Bruno and settles in for the night. In the car, Simon lies about where he lives, claiming to be from a 'fucked-up' family as Bruno chats them up. The moment hints at a deeper tension between them.
The mother-son revelation under pressure
During the ride, Simon reveals to Bruno that Louise is his mother, not his sister. Bruno forces them out of the car and they walk home, the truth kept temporarily hidden but threatening to explode.
Night in Louise's bed reveals dependency
That night, Simon pays Louise to sleep in her bed. Louise admits she kept him to avoid loneliness and to defy those who said she should not keep him. After Simon falls asleep, she sneaks out to drink and is found unconscious the next morning.
Morning aftermath: money spent and realized loss
Simon carries Louise home with help from other children and realizes they have spent all their money. The betrayal of their finances becomes a painful wake‑up call for their fragile arrangement.
Desperate gambit backfires; partnership ends
With no income, Simon tries to recoup funds by returning to the resort with a younger child. Mike rebukes him and ends their partnership. Simon hides the skis anyway and raids the changing room, but finds only small change; the hidden equipment is found, and he is thrown out.
Louise helps, and Simon is fed; a new job looms
Without money, Simon asks an old customer for food and Louise cooks for him. She then takes him to her new chalet cleaning job and hands him some money, saying she does not want to be in his debt. It marks a fragile alliance still tethered to survival.
Visit to Kristin's cabin; lie exposed
They end up at Kristin's cabin, where Kristin is disappointed to learn that Simon lied about who he is. He apologizes, but she rebuffs him and remains distant.
Missing watch triggers a cold confrontation
Kristin later confronts Louise and Simon about a missing watch. Simon's pockets are turned out and the watch is found in his pants; Louise and Kristin clash, and Kristin dismisses them without offering help.
Louise's anger ignites a fresh fight
Louise grows furious that Simon cost her a job, and the two argue harshly. The conflict underscores their volatile dependence and dwindling options as season's end approaches.
End of season: a final, painful farewell
As the season ends, Simon goes to the resort to seek work but is refused due to his age. He takes a cable car down while Louise goes up, and in a final separation the two cars part with Louise shouting to him from the glass.
Explore all characters from Sister (2012). Get detailed profiles with their roles, arcs, and key relationships explained.
Simon — Kacey Mottet Klein
A twelve-year-old boy who scavenges by stealing ski equipment to support himself and his sister. He is resourceful, quiet, and burdened with responsibilities beyond his years, yet still curious and capable of tenderness. His loyalty to Louise drives much of his moral conflict as he navigates danger, deceit, and survival.
Louise — Léa Seydoux
An older sister who is selfish and unreliable, unable to hold a job and often chasing new romances. She uses Simon to sustain her lifestyle, treating him as a laborer rather than a family member. Her volatile behavior and guarded secrets propel the film’s tension and tragedy.
Kristin — Gillian Anderson
A tourist who helps with her son's equipment and forms a tentative bond with Simon. She is cautiously compassionate but quickly discovers Simon's deception when he lies about his identity. Despite being misled, she embodies a sense of boundary and discernment.
Mike — Martin Compston
A resort employee who initially partners with Simon by providing storage for stolen skis and a chance at a steady, legitimate outlet. He later rebukes the alliance when the truth comes out, enforcing consequences and illustrating the limits of trust.
Bruno — Yann Trégouët
Louise's vacation partner and improvised ally, who appears to offer a way out of loneliness but ultimately contributes to Simon and Louise's precarious situation. His meddling and drive reflect the unstable adult relationships surrounding the siblings.
Learn where and when Sister (2012) takes place. Explore the film’s settings, era, and how they shape the narrative.
Time period
Winter
The events take place over a single Swiss winter during the ski season, when snowfall and short days frame life around the slopes and the staff's seasonal transition. Tensions rise as the season ends and opportunities shrink, forcing desperate choices. The cold atmosphere mirrors the characters' emotional chill.
Location
Housing complex below a luxury Swiss ski resort, Swiss Alps, Switzerland
The story unfolds in a snowbound Swiss mountain setting, centered on a modest housing complex adjacent to an opulent ski resort. The contrast between wealth at the resort and the boys' gritty living conditions gives the film its social tension. Cold, wintry surroundings shape daily survival, secrecy, and the characters' choices.
Discover the main themes in Sister (2012). Analyze the deeper meanings, emotional layers, and social commentary behind the film.
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Codependency
A fragile, codependent dynamic drives the plot: Simon protects and sustains Louise, while Louise exploits his loyalty. The bond between siblings becomes a burden, revealing how care can become a tether rather than a help. The film explores how vulnerability is manipulated in a harsh environment.
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Survival and Crime
Simon turns to theft to keep them afloat, blurring lines between necessity and criminal acts. His actions reveal the moral compromises forced by poverty and neglect. The film tracks the escalating cycle of stealing, risk, and the cost of survival.
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Identity and Deception
Lies and misrepresentations ripple through relationships, most notably when Simon pretends to be someone else. The deception exposes the fragility of trust and the damage done when people hide who they really are. Reality continually clashes with the identities people try to present.

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Discover the spoiler-free summary of Sister (2012). Get a concise overview without any spoilers.
In the crisp, snow‑capped world of a Swiss Alpine ski resort, a quiet tension lingers beneath the glitter of luxury. The mountains loom both beautiful and indifferent, framing a community where wealth and scarcity glide side by side on the same slopes. The film captures this contrast with a restrained visual style, letting the cold air and muted colors speak as loudly as any dialogue.
Simon is a twelve‑year‑old who has learned to survive by moving through the resort’s hidden corners, quietly providing for himself and his older sister. His resourcefulness is matched by a steady, almost invisible presence, as he balances the demands of daily life with the fragile hope of a better future. Louise is charismatic and restless, drifting between fleeting chances at stability and moments of carefree escape. Their bond is a delicate dance of responsibility and longing, each leaning on the other while trying to keep the world at bay.
When Simon encounters a seasonal worker who knows the inner workings of the resort, a tentative partnership forms. This ally offers a glimpse of a more reliable way to navigate the precarious economy that sustains them, prompting Simon to weigh his values against the comfort of the familiar. The relationship hints at both opportunity and risk, echoing the film’s underlying question of how far one will go to protect the people they care for.
Through its observational tone and emotionally restrained pacing, the story explores themes of poverty, loyalty, and resilience. The Alpine landscape becomes a silent witness to the characters’ quiet endurance, emphasizing the tension between hope and hardship. As the season unfolds, the precarious balance between survival and affection shapes a compelling portrait of two siblings bound by circumstance, each searching for a foothold in a world that is as beautiful as it is unforgiving.
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