The Swarm (2021) Timeline Explained – Every Event in Order

After Virginie's husband Nico dies, hinted to be a suicide, the family loses their goat farming business. Desperate to provide for her two children, Laura and Gaston, Virginie pivots to raising locusts as an alternative protein source. This venture represents her attempt to survive financially after the tragedy, but the locusts fail to reproduce in sufficient numbers, pushing her toward increasingly desperate measures.

Foreshadowing: The shift from goats to locusts mirrors Virginie's descent from stability into chaos, as the locusts become a metaphorical representation of her unraveling mental state.

• Virginie
• locusts
• Nico
• suicide
• financial struggle
• farm

Gaston discovers the locusts are attracted to flesh and blood when one of his pet locusts feeds on a wound on his hand. This discovery prompts Virginie to test the theory by deliberately exposing her own wounds to the locusts. When they feed on her blood, their population surges dramatically, allowing her to sell them profitably. However, this creates a cycle where the locusts develop an appetite for human blood and flesh.

Foreshadowing: Gaston's initial observation about the locusts feeding on his hand wound plants the seeds for the horror that follows.

• locusts
• blood
• Gaston
• feeding
• population surge

Once Virginie discovers that feeding her blood to the locusts causes them to reproduce rapidly, she sees it as the only way to make her failing farm profitable. The locusts multiply dramatically, enabling her to sell large quantities and escape her financial ruin. However, this creates a dependency, the locusts now require regular blood supply, and Virginie becomes trapped in a self-destructive cycle, unable to stop even as her physical and mental health deteriorates.

Foreshadowing: Virginie's initial success with blood-feeding sets up her complete isolation and physical decline.

• Virginie
• blood
• locusts
• addiction
• financial desperation

Laura destroys one of the greenhouses in a fit of rage and desperation. She is increasingly alarmed by her mother's disturbing fixation on the locusts and the secretive, obsessive behavior that follows. Laura feels helpless watching Virginie's mental and physical deterioration, and her destructive act represents both frustration with the situation and an attempt to expose or stop what her mother has become consumed by.

Foreshadowing: Laura's destructive act directly leads to the locusts attacking the goat Huguette, showing how her desperate attempt to fight back only makes things worse.

• Laura
• greenhouse
• destruction
• rage
• frustration

When Laura tears open the greenhouse in anger, she releases a swarm of locusts that attack Huguette, the family's goat tied to a truck nearby. Virginie discovers Huguette covered in locusts in a field, but she chooses to hide this tragedy from Gaston, who loved the goat. This lie further isolates Virginie and adds to the burden of secrets she carries.

Foreshadowing: Huguette's death foreshadows the human casualties that follow, demonstrating the deadly consequences of the locusts once they're unleashed.

• Huguette
• goat
• Laura
• greenhouse
• death

Virginie lies to Gaston about Huguette's fate because she is already consumed by guilt and the growing horror of her situation. She knows her obsession with the locusts has already caused harm, and telling Gaston that his beloved goat was killed by the very creatures she forced him to help raise would only deepen the family's trauma. This decision reflects her deteriorating mental state and her desperate attempt to protect her children from the full truth of what she's created.

Foreshadowing: Virginie's lie sets up the eventual revelation of her complete breakdown and the family's fragmentation.

• Virginie
• Gaston
• Huguette
• lie
• guilt

The neighbor enters Virginie's greenhouses searching for his missing dog. He is unaware that the locusts have become dangerous and that Virginie has been secretly feeding them blood. The locusts attack and kill him, and Karim later discovers this horrifying truth, realizing the extent of the danger that Virginie has been hiding.

Foreshadowing: The neighbor's death serves as the catalyst for Karim to understand the true threat and attempt to destroy the locusts.

• neighbor
• greenhouses
• death
• Karim
• discovery

After Karim discovers the neighbor's body in the greenhouses and realizes the locusts have become deadly, he panics and grabs gasoline to burn down the greenhouses. His intention is to destroy the locusts and end the threat before they can harm Laura and the family. However, his attempt backfires, the fire causes the locusts to swarm out of the greenhouses and attack the house where Laura and Karim are hiding.

Foreshadowing: Karim's desperate attempt to eliminate the threat inadvertently triggers the chaotic final attack that forces Virginie's hand.

• Karim
• fire
• greenhouses
• panic
• locusts

As Laura hides beneath an overturned boat on a lake, the locusts prepare to overwhelm her. Virginie rushes to the scene and cuts her palms to deliberately attract the locusts away from her daughter. The blood draws the swarm to her, allowing Laura to escape the water. In the chaos, Laura swims toward her mother, and they embrace as the remaining locusts attack Virginie. This act of maternal love saves Laura from death, though Virginie is killed by the swarm.

Foreshadowing: Virginie's willingness to sacrifice herself using her blood mirrors her earlier use of blood to control the locusts, but this time she uses it to save rather than profit.

• Virginie
• Laura
• sacrifice
• blood
• locusts
• death

The locusts begin attacking people once they develop a taste for human blood through Virginie's regular feeding. As the locust population grows and their hunger increases, they no longer remain confined to the greenhouses. When the neighbor enters searching for his dog, and later when Karim's fire drives them out, the locusts naturally seek out other sources of blood, humans. Their attack on Huguette was the first indication of this shift from controlled feeding to predatory behavior.

Foreshadowing: Gaston's discovery that locusts can feed on blood was the first step toward their transformation into killers.

• locusts
• blood
• attacks
• hunger
• predation

Virginie becomes increasingly isolated because she must hide the secret of her blood-feeding ritual from everyone, including her children and Karim. The open wounds on her body become another painful secret she cannot share. As the locusts demand more blood, she spends nights nurturing them, neglecting her children and distancing herself from friends. Her shame and desperation prevent her from reaching out, and she pushes away anyone who might discover her dark practice.

Foreshadowing: Virginie's isolation directly leads Laura to take matters into her own hands, tearing open the greenhouse in frustration.

• Virginie
• isolation
• secrets
• wounds
• family
• Karim

The ending shows Laura and Virginie standing together at dawn, facing the remnants of the locust swarm after Virginie's sacrifice. This bittersweet moment represents hope emerging from devastation, Laura survived because of her mother's love, and though the swarm is largely destroyed, they now face an uncertain future together. The dawn signifies survival and the possibility of healing, but the grim landscape and Virginie's sacrifice also underscore the heavy cost of their survival.

Foreshadowing: The darkness of the night attack gives way to dawn, symbolizing the transition from horror to fragile hope.

• dawn
• ending
• hope
• sacrifice
• survival
• Laura
• Virginie