Elevation (2024) Timeline Explained – Every Event in Order

Will needed to reach Boulder to find oxygen filters for his son Hunter, who suffers from a serious lung disease. Their supply was critically low, and without the filters, Hunter would not survive. Despite knowing the extreme danger of descending below the safety line where Reapers hunt, Will had no choice but to make the perilous trip.

Foreshadowing: Earlier in the film, we see Hunter's frustration with his restricted life and the failing communication systems, highlighting the desperation of their situation.

• Will
• Hunter
• oxygen filters
• Boulder
• survival

Katie was killed by a Reaper attack while the group explored the lower mining levels. Without the compass detecting Reaper bio-electromagnetic pulses and below the safety line, they were vulnerable. When a Reaper found them in the dark tunnels, it attacked and fatally wounded Katie before they could escape.

Foreshadowing: The group had already been warned about the dangers when they descended, and Nina's device stopped working in the depths.

• Katie
• Reaper
• mines
• death
• attack

Nina theorized that Reapers are not biological creatures but mechanical constructs, which explained why they didn't eat or sleep. She discovered they have magnetic defense mechanisms and developed cobalt-laced bullets to penetrate their armor. Using these, she successfully killed a Reaper that broke into her laboratory, confirming her hypothesis.

Foreshadowing: Earlier at the lodge, Nina mentioned the Reapers don't eat or sleep, hinting at their mechanical nature.

• Nina
• Reapers
• cobalt bullets
• mechanical
• kill

The Reapers emerged from subterranean sinkholes three years before the film, decimating most of humanity. The post-credit scene reveals they are alien machines, and the sinkholes were likely their exit points from underground nests. This was a coordinated invasion that caught humanity completely off guard.

Foreshadowing: The post-credit scene shows three greenish meteorites entering orbit, suggesting this was a planned invasion.

• Reapers
• sinkholes
• emergence
• alien
• invasion

The exact reason is never explicitly stated in the film, but humans discovered that Reapers cannot survive or operate above 8000 feet. This likely relates to their alien mechanical design and the atmospheric conditions at higher altitudes. All surviving human communities established themselves above this safety line.

Foreshadowing: The entire survival structure of the movie depends on this altitude limitation.

• Reapers
• 8000 feet
• safety line
• altitude
• survival

Tara was killed by Reapers during an expedition she undertook with Nina three years before the film. Their mission was to uncover the weaknesses of the Reapers in an effort to help humanity fight back. She fell victim to the creatures during this dangerous research expedition.

Foreshadowing: Will's grief over Tara and his reluctance to discuss her death are established early in the film.

• Tara
• Will
• death
• Reapers
• expedition

The post-credit scene shows three greenish meteorites entering Earth's orbit, observed by Nina through a telescope. This suggests more Reaper machines are arriving or that this was a larger invasion plan. It sets up potential future threats beyond the single Reaper they managed to kill.

Foreshadowing: This scene comes after Nina and Will successfully kill one Reaper, hinting the threat is far from over.

• post-credit
• meteorites
• orbit
• sequel
• threat

When a Reaper ambushed them at the abandoned hospital in Boulder, Will spotted nearby gas canisters and deliberately detonated them. The explosion created a massive fireball that distracted the Reaper, allowing Will and Nina to escape in their vehicle while the creature was occupied.

Foreshadowing: Earlier in the journey, Will demonstrated quick thinking by activating the ski lift generators to escape another Reaper.

• Will
• Nina
• hospital
• Reaper
• escape
• explosion

The surrounding communities turned off their radios to conserve power. With no reliable source of electricity in the post-apocalyptic world, they switched to flag-based communication to signal each other. This decision led to Hunter's frustration and isolation from other people his age.

Foreshadowing: Hunter's visible frustration with the communication breakdown establishes the tension that drives part of the plot.

• radios
• flags
• communication
• communities
• power

Despite warning Will about the dangers, Nina agreed to join the journey because she saw it as an opportunity to test her theories about the Reapers. Her scientific background drove her to gather data and find weaknesses in the creatures. Additionally, she had lost her own family to Reapers and shared Will's motivation to fight back.

Foreshadowing: Nina's personal loss is revealed later in the film, explaining her determination to understand and kill the Reapers.

• Nina
• Will
• Boulder
• journey
• science

After Nina killed a Reaper with her cobalt-laced bullets at her laboratory, the creatures were confirmed to be alien technology rather than biological organisms. This validated Nina's earlier theory that they don't eat or sleep because they have no biological needs, they are entirely mechanical constructs.

Foreshadowing: Nina's observation at the lodge that Reapers don't eat or sleep was the first hint at their true nature.

• Reapers
• machines
• alien
• technology
• Nina

Nina raised a pirate flag on the mountain to signal to all nearby communities that a Reaper had been killed. This was a symbol of hope and victory, showing that the creatures could be defeated. The flag signaled that radio communication was being restored and that humanity could now fight back.

Foreshadowing: The communities had been using flags for communication, making this a meaningful symbol.

• pirate flag
• signal
• victory
• communities
• hope