Under Paris (2024) Timeline Explained – Every Event in Order

Lilith swam from the Pacific Ocean through the ocean currents and into the River Seine. Her tracking beacon remained active throughout her journey, allowing Mika to track her movement from the Pacific all the way to Paris. The shark adapted to freshwater as she traveled upstream, surviving in the river's environment.

Foreshadowing: Earlier in the film, the team notes that Lilith has grown significantly since her tagging, suggesting exceptional adaptability.

• lilith shark
• paris
• seine river
• shark migration
• great pacific garbage patch

The Mayor views the triathlon as crucial for Paris's global visibility ahead of the upcoming Olympic Games. City officials prioritized the event's economic and reputational benefits over public safety, insisting the competition must proceed even after shark attacks occurred in the Seine.

Foreshadowing: The stakes around the Olympics are mentioned early when Mika and Ben discuss the political pressure surrounding the event.

• mayor
• triathlon
• paris olympics
• cancel event
• city officials

Parthenogenesis is a form of asexual reproduction where a female can produce offspring without fertilization from a male. After Lilith was attacked and injured by the military, Sophia and Adil discover she is pregnant with juvenile sharks that developed through this process. This explains how a single shark could produce an entire school of attackers.

Foreshadowing: The discovery occurs after the reservoir attack when Sophia examines the surviving shark.

• parthenogenesis
• asexual reproduction
• shark pregnancy
• lilith offspring
• freshwater sharks

Mika is an environmental activist who believes sharks should be protected, not exterminated. She sees Lilith as a victim of human-created conditions, climate change and pollution drove her into the Seine. Mika's mission is to save the shark and return her to the ocean, which is why she and Ben disable the beacon and attempt to guide Lilith to safety.

Foreshadowing: Mika's environmentalist values are established when she first brings the news about Lilith to Sophia.

• mika
• environmentalist
• rescue shark
• animal rights
• save lilith

The military's reckless use of underwater explosives triggers a chain reaction of chaos. The explosions panic the sharks, causing them to scatter and attack more swimmers. The blasts also capsize police boats and create flooding that drowns people, including the Mayor and Angèle who fall into the water. The uncontrolled response escalates rather than contains the threat.

Foreshadowing: Sophia and Adil's plan with Poiccard and Berruti was methodical; the military bypassed this controlled approach.

• military
• explosions
• shark attack
• underwater bombs
• paris chaos

Sophia and Adil end up stranded on a rooftop as floodwaters consume central Paris following the military explosions. They survive the chaos but are left witnessing the devastation. The immediate threat is not fully resolved, and the final scene reveals Lilith's offspring have already spread worldwide.

Foreshadowing: Their position on the rooftop mirrors their earlier descent into the Seine, both trapped between the sharks and rising water.

• sophia
• adil
• ending
• paris flood
• survival

The film reveals that Lilith's juvenile sharks have silently colonized major cities including Paris, London, New York, Bangkok, Venice, and Tokyo. While the exact mechanism is not shown, the implication is that the sharks traveled through global waterways and ocean currents, spreading from the original Lilith to establish populations in diverse locations worldwide.

Foreshadowing: The discovery of the pregnant shark in Paris establishes that parthenogenesis can rapidly produce multiple offspring.

• global
• offspring
• worldwide
• colonization
• cities
• sharks

Lilith is a predatory animal operating on instinct, not gratitude or emotion. Mika's use of a pulsing beacon to attract her mimics prey behavior, triggering the shark's hunting response. Despite Mika's faith that the shark would recognize her intent, Lilith attacks and kills Ben, Léopold, and others in the reservoir.

Foreshadowing: The earlier expedition established that Lilith responds violently to any perceived threat or opportunity.

• mika
• attack
• reservoir
• ben
• leopold
• shark behavior

After years of guilt over her husband's death, Sophia is motivated by the need to stop Lilith before more people die. A revealing conversation with Mika helps her realize that inaction will lead to more tragedies. When Adil's team successfully reactivates the beacon, Sophia sees an opportunity to finally confront the shark that destroyed her life.

Foreshadowing: Sophia's initial reluctance at the aquarium contrasts with her later determination to face Lilith.

• sophia
• adil
• team
• hunt
• guilt
• chris

The juvenile sharks are Lilith's offspring, born through parthenogenesis and already grown to maturity in the Seine's ecosystem. When the triathlon begins and swimmers enter the water, the vibrations and presence of prey trigger a feeding frenzy. The school of sharks responds collectively to the easy hunting opportunity created by the event.

Foreshadowing: The discovery of the pregnant shark earlier foreshadows this massive attack.

• juvenile sharks
• triathlon
• school
• attack
• paris
• Seine