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Plot Summary

What Happened to Monday (2017) Plot Summary & Ending Explained

Release, runtime and language
2017 · 123 min · English
Echo score 60
JustWatch #9,216 10
Directed by
Tommy Wirkola
Starring
Adetomiwa Edun, Willem Dafoe, Marwan Kenzari, Glenn Close, Christian Rubeck, Noomi Rapace
Budget
$20M

In a dystopian future grappling with severe overpopulation, seven identical sisters are raised in secrecy to survive a system that denies children the right to exist. To avoid detection, they ingeniously take turns living as a single person named Karen Settman. Noomi Rapace portrays all seven sisters in this suspenseful story. When one of them, Monday, goes missing, the elaborate deception unravels, forcing the remaining sisters to risk everything to find her and confront the Child Allocation Bureau, led by the formidable Nicolette Cayman.

On this page (7)
  1. 1 Where to watch
  2. 2 What happens: full plot
  3. 3 Plot questions answered
  4. 4 How it ends
  5. 5 Movie threads
  6. 6 Movies like What Happened to Monday
  7. 7 Every angle

Where to watch

Where to Watch What Happened to Monday (2017)

Where can you watch What Happened to Monday? Stream, rent or buy it in the US, including on Netflix and Netflix Standard: current JustWatch availability with up-to-date prices.

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Full plot summary · contains spoilers

What Happens in What Happened to Monday: Full Plot Summary

The whole story of What Happened to Monday (2017) explained, from the opening scene to the final frame: every key event, every twist and what it all adds up to. Read it as a quick recap before the sequel, to check a scene you missed, or to finally understand what really happened.

In the year 2073, the world grapples with a severe overpopulation crisis, leading to the implementation of a draconian one-child policy by the Child Allocation Bureau (C.A.B.). In a poignant twist of fate, when Karen Settman gives birth to identical sisters, only the eldest is allowed to remain. Her father, Terrence, names each of the sisters after the days of the week and meticulously trains them to live as a single entity, preserving the secret of their existence. The sisters meet daily to share their experiences and information, adhering to a strict rule: only one can venture out into the world at any time.

To disguise their identity, they employ a clever system of wigs and makeup to mask any identifying traits. Terrence, who understands the grave risks they face, often reinforces the importance of their bond and the repercussions of disobedience. However, the tension mounts when Thursday breaks this crucial rule and, in a devastating incident, injures her finger, leading to Terrence having to remove the same part from all the sisters, starting with Monday.

As the years pass, the sisters manage to maintain their deception without raising suspicions. One day, as Sunday returns from her job at the bank, she witnesses C.A.B. agents detaining a child amidst public outcry. The siblings, watching the distressing event unfold on their screens, engage in a heated discussion about their future. Thursday contemplates the possibility of surrendering themselves, dreaming of a time in the future when she could live openly, and pursue her own path. However, Monday, ever the responsible elder sister, insists on the necessity of their unity, reinforcing their pact to continue living under the veil.

The following day, Monday endeavors to present herself as Karen but finds herself caught in the web of office politics, with the ambitious Jerry hinting at blackmail after she secures a promotion. Her absence at their daily meeting sends alarming ripples through the sisterhood, triggering Tuesday to investigate her disappearance, ultimately leading to a shocking revelation. Monday’s dealings with C.A.B. prove to be a perilous game of survival, and soon, what started as a deceit spirals into a betrayal of epic proportions.

As C.A.B. agents zero in on the sisters, they navigate a web of deception where loyalties are tested and lives are lost. Through a series of action-packed confrontations, starting with a harrowing showdown where Sunday meets a tragic end, the weakened sisterhood must find strength to persevere. The sisters fight back, driven by the need to uncover the truth as they grapple with their intertwined fates.

Amidst the chaos, alliances shift and betrayals unfold. In a desperate attempt to save one another, the sisters face the brutal world enforced by the C.A.B. that threatens to tear them apart permanently. With tension rising, Adrian, a C.A.B. agent with a complicated connection to the sisters, is entangled in their fight for survival.

This gripping narrative reaches its zenith when Thursday, with the help of Adrian, schemes to infiltrate C.A.B. headquarters, uncovering the dark realities of their society. As the sisters pursue their path to redemption against overwhelming odds, a treacherous game of power and identity ensues, leading to heartbreaking confrontations that reveal the true cost of survival.

At the climax of their struggle, the sisters are forced to confront each other in a dramatic showdown, leading to devastating consequences that challenge their bonds and redefine their identities. With an irreversible choice made, the fallout reshapes their lives forever. As the dust settles, the remnants of their struggles herald a new beginning—a chance for renewal in a society where the unthinkable had once reigned supreme.

In the end, their journey leads to the repeal of the Child Allocation Act and the dawn of a new hope for their future as they embrace the next chapter of their lives, forging their identities anew.

Last updated: November 02, 2024 at 11:47

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Plot questions answered

What Happened to Monday Plot Explained: Your Questions Answered

The questions people ask most about What Happened to Monday (2017): what happens in the confusing scenes, why the characters do what they do, the twists, hidden details and what the ending means. Each answer contains spoilers.

Q1

Why do the sisters take turns being one person?

The seven identical sisters were forced to share a single identity because the Child Allocation Bureau (C.A.B.) enforces a strict one-child policy in their dystopian world. Their father, Terrence, trained them from birth to live as one person named Karen Settman, with each sister going out into the world on her designated day of the week. This elaborate system was their only chance to survive in a society that would kill any child beyond the firstborn.

Foreshadowing: The sisters' daily meetings where they share experiences establish early on how dependent they are on this rotating schedule.

  • seven sisters
  • karen settman
  • one child policy
  • cab
  • dystopian
Q2

What happened to Monday when she went missing?

Monday was abducted by C.A.B. agents after she tried to investigate the organization while posing as their mother Karen at her job. She was taken to a facility where she was processed like all other illegal children. Her disappearance triggers the central mystery of the movie as the other sisters desperately search for her.

Foreshadowing: Monday's concern about the promotion and her suspicious interactions with Jerry hint at her reckless decision to pursue the C.A.B. investigation.

  • monday disappearance
  • cab agents
  • kidnapped
Q3

Why did Terrence cut off fingers from all the sisters?

Thursday broke the cardinal rule by going outside on her own without permission. When she injured her finger, Terrence faced an impossible choice: if C.B. agents ever compared the sisters physically, any difference would expose their secret and get them all killed. To maintain their identical appearance, he surgically removed the same finger from all seven sisters as a unified punishment and precaution.

Foreshadowing: Terrence's strict warnings about the consequences of breaking rules establish early that their survival depends on absolute uniformity.

  • thursday injury
  • finger cutting
  • terrence
  • punishment
Q4

Who betrayed the sisters to C.A.B.?

Monday herself became the betrayer after she was captured and processed by C.A.B. Rather than face death, she agreed to cooperate with Nicolette Cayman, the C.A.B. leader, by leading agents to the sisters' hideout. Her betrayal was motivated by the promise of freedom and the hope that if she surrendered the others, she might be allowed to live openly one day.

Foreshadowing: Tuesday's investigation reveals that Monday's dealings with C.A.B. were more dangerous than the sisters realized.

  • monday betrayal
  • nicolette cayman
  • traitor
Q5

Why did Adrian help Thursday infiltrate C.A.B.?

Adrian was a C.A.B. agent who secretly had romantic feelings for Thursday (who he knew as Karen). When Thursday discovered this connection, she used it to forge an alliance. Adrian helped her break into C.A.B. headquarters because he wanted to protect her and had grown disillusioned with the bureau's brutal methods. His inside knowledge proved crucial to their mission.

Foreshadowing: Adrian's presence as a C.A.B. agent investigating the sisters creates the opportunity for their eventual partnership.

  • adrian
  • cab agent
  • thursday alliance
  • romance
Q6

How did Sunday die in the movie?

Sunday was killed during one of the action-packed confrontations with C.A.B. agents as they closed in on the sisters' location. Her death occurs early in the revenge arc when the sisters fight back against the bureau. Her tragic end motivates the surviving sisters to continue their resistance with greater determination.

Foreshadowing: The public scene of C.A.B. detaining a child that Sunday witnesses foreshadows the violence they will ultimately face.

  • sunday death
  • killed
  • cab agents
Q7

How did the sisters manage to defeat C.A.B.?

Thursday and Adrian infiltrated C.A.B. headquarters and exposed the bureau's dark secrets to the public, including evidence of their illegal activities and mass executions of children. This revelation sparked public outrage that forced the government to repeal the Child Allocation Act. The sisters' coordinated fight, combined with Adrian's insider help, brought down the entire oppressive system.

Foreshadowing: The sisters' constant monitoring of news and broadcasts throughout the movie establishes how public opinion could be swayed.

  • cab defeat
  • child allocation act repeal
  • victory
Q8

How many sisters survived until the end?

By the movie's conclusion, only two sisters remain alive. The exact count depends on which sisters are lost throughout the intense action sequences, but the survivors are the ones who live to see the Child Allocation Act repealed and are finally able to exist openly as seven individuals rather than one.

Foreshadowing: The climactic showdown among the sisters themselves creates the ultimate test of their bonds.

  • survivors
  • sisters alive
  • ending
Q9

Why was the Child Allocation Act repealed?

The Child Allocation Act was repealed because Thursday and Adrian successfully exposed C.A.B.'s illegal activities and mass executions to the public. The revelation of the bureau's true nature sparked widespread public outrage and protest against the oppressive one-child policy. This pressure forced the government to overturn the law entirely.

Foreshadowing: The earlier scene where the sisters witness public outcry over a child detention hints at the power of public opinion.

  • child allocation act
  • law repealed
  • one child policy ends
Q10

What was Jerry's role in Monday's disappearance?

Jerry was Monday's coworker at the bank who discovered she was not the real Karen Settman. When Monday posed as her mother to secure a promotion, Jerry figured out something was suspicious and hinted at blackmail. This confrontation forced Monday to take desperate action, which led her directly to C.A.B. and ultimately resulted in her capture.

Foreshadowing: Monday's nervous behavior at the office and her concern about the promotion plant the seeds for this dangerous encounter.

  • jerry
  • blackmail
  • office
  • karen settman impersonation
Q11

How did the sisters avoid detection for so long?

The sisters used an elaborate system of wigs, makeup, and coordinated routines to maintain their disguise as a single person. They met daily to share everything that happened so each could seamlessly continue where the other left off. Their strict discipline, combined with Terrence's meticulous training, allowed them to pass as Karen Settman for years without raising suspicion.

Foreshadowing: The opening scenes establish their careful routine and the constant pressure of maintaining their double life.

  • disguise
  • wigs
  • makeup
  • secret identity
Q12

Why was Nicolette Cayman hunting the sisters?

Nicolette Cayman led the Child Allocation Bureau and was determined to enforce the one-child policy at any cost. She pursued the sisters because their very existence proved the system could be circumvented, which threatened the entire foundation of the society she had helped create. Their case became personal as she sought to prove that no one was above the law.

Foreshadowing: Cayman's commanding presence in C.A.B. scenes establishes her as the primary antagonist from the beginning.

  • nicolette cayman
  • cab leader
  • villain
  • antagonist

Ending explained

What Happens at the End of What Happened to Monday?

How What Happened to Monday (2017) ends, in short: the final scene, the last twist and what it means for the characters. The full ending explained, with every spoiler, lives on its own page.

Read the full ending explained

In the final scenes of What Happened to Monday, after a tense struggle with the Child Allocation Bureau (CAB) and the revelation of their brutal practices, Monday’s sister Thursday manages to expose the truth by broadcasting evidence of the CAB’s atrocities. During the chaos, Monday is shot and mortally wounded, but it’s later revealed that her twins are safe, growing in an artificial womb. With Cayman’s corrupt regime dismantled and her facing the death penalty, it seems like justice has been served. However, the movie ends with a stark visual: the camera pans from Monday’s twins to a hospital ward filled with hundreds of newborn babies. This haunting image underscores the grim reality—the overpopulation crisis that sparked the one-child policy has not been solved. Despite their moral victory and the lifting of oppressive rules, the world remains overwhelmed and unsustainable, implying that humanity's problems are far from over and that the planet’s future remains bleak. The ending suggests that while some individuals might find hope or redemption, the broader environmental and societal collapse persists, leaving the viewer with a sobering vision of an overburdened planet.

What Happened to Monday ending explained in full

Movie threads

More Movies Like What Happened to Monday, by Mood & Story

Curated lists built around what makes What Happened to Monday tick: the same mood, the same kind of story or the same emotional payoff. Each list explains why these movies belong together.

Dystopian Rebellion Thrillers like What Happened to Monday

High-stakes action in a broken world where individuals defy totalitarian control. If you liked the high-stakes fight against the system in What Happened to Monday, you'll enjoy these movies. This list features similar dystopian action thrillers where characters risk everything to challenge a corrupt and controlling regime, filled with tension and gripping survival stories.

  • tense
  • urgent
  • gripping
  • bleak
  • determined
  • suspenseful
  • Tone: dark, tense, determined
  • Pacing: fast, urgent
Why these movies?

The story pattern: Stories in this thread typically begin with a protagonist or group living under an oppressive regime. A catalyst event forces them into open rebellion, leading to a series of chases, confrontations, and sacrifices. The plot is driven by the central goal of exposing or overthrowing the corrupt system, often culminating in a final, decisive confrontation.

Why they belong together: These movies are grouped together because they share a core premise of rebellion within a dark, futuristic setting. They feature high intensity, fast pacing, and a heavy emotional weight centered on themes of survival, sacrifice, and the fight for a better future against overwhelming odds.

Suspenseful Identity Mysteries like What Happened to Monday

A dangerous secret identity is threatened, forcing a frantic race against time. Fans of the secret sister identity premise in What Happened to Monday will appreciate these films. Discover movies with similar suspenseful plots where a character's life depends on a dangerous secret, leading to paranoia, betrayal, and a gripping race against time when their deception starts to unravel.

  • suspenseful
  • paranoid
  • anxious
  • claustrophobic
  • gripping
  • urgent
  • Tone: suspenseful, paranoid, anxious
  • Pacing: fast, frantic
Why these movies?

The story pattern: The narrative pattern revolves around a protagonist living a double life or hiding a crucial secret. The equilibrium is shattered when an external threat or internal betrayal puts the deception at risk. This triggers a domino effect of close calls, investigations, and escalating danger as the character fights to protect their secret and their life before time runs out.

Why they belong together: These films are connected by their core focus on the tension and paranoia of maintaining a false identity under extreme pressure. They share a claustrophobic mood, fast pacing driven by imminent discovery, and a high level of intensity that keeps viewers on the edge of their seats.

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Every angle

What Happened to Monday (2017) Explained: Plot, Ending, Timeline & Characters

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