How It Ends (2018) Timeline Explained – Every Event in Order

Will and Tom argued because Will was nervous and defensive about his intentions toward Sam. During the tense dinner, Tom questioned Will's preparedness for marriage and starting a family, which escalated into a heated exchange. Will then stormed out without revealing Sam's pregnancy or his plans to propose, creating a rift that needed to be mended when disaster struck.

Foreshadowing: The argument sets up the strained relationship Will must overcome to earn Tom's trust during their dangerous journey.

• Will
• Tom
• dinner
• argument
• marriage
• approval

The disaster begins as a seismic event off the West Coast that disrupts communications and electrical systems, canceling all flights. Later, a volcanic eruption triggers a catastrophic pyroclastic flow that destroys Seattle. The exact nature of the initial seismic incident remains ambiguous, but it appears connected to the volcanic activity that ultimately engulfs the Pacific Northwest.

Foreshadowing: The seismic incident that grounds all flights is the first hint of the larger geological catastrophe unfolding.

• disaster
• seismic
• volcano
• eruption
• pyroclastic flow

Tom dies from complications of his injuries sustained earlier in the journey. During a confrontation with a civilian armed with a shotgun on the highway, Tom suffers serious injuries including fractured ribs. His condition deteriorates over the following days despite Will's attempt to perform a needle thoracostomy when Tom's lung collapses. He ultimately succumbs to his injuries before reaching Seattle.

Foreshadowing: Tom's rib injuries from the highway confrontation plant the seeds of his eventual death.

• Tom
• death
• injuries
• collapsed lung
• ribs

Ricki decided to leave after the violent confrontation with the robbers. When Will chased down the thieves and Ricki shot out their tires causing a fiery explosion, the traumatic experience shook her. The ordeal of nearly dying and taking lives, combined with the escalating danger of their journey, led her to part ways with Will and Tom that night.

Foreshadowing: The robbery incident marks a turning point where the journey's violence becomes too much for Ricki.

• Ricki
• leaves
• robbers
• departure
• trauma

Will burned the disabled vehicle with Tom's body inside because Tom had died and their car was stuck, forcing Will to continue on foot toward Seattle. Rather than leave Tom's body exposed in the wilderness or drag it with him, Will chose to cremate him in a final act of respect, allowing him to continue his journey to find Sam.

Foreshadowing: This grim decision comes after Tom's death and represents Will's transformation into a survivor willing to make hard choices.

• Will
• Tom
• burn
• vehicle
• cremation
• death

Jeremiah attacked Will because he believed he could provide a better life for Sam and her unborn child during the disaster. Driven by delusional paranoia and a sense of protection toward Sam, Jeremiah saw Will as a threat who would take Sam away from the safety he had provided. In his unstable mental state, he attempted to harm Will to keep Sam for himself.

Foreshadowing: Jeremiah's presence at the cabin and his overprotective behavior toward Sam foreshadows his violent breakdown.

• Jeremiah
• attack
• cabin
• self-defense
• motivation

Will found Sam by first going to her apartment in Seattle, which was destroyed and covered in ash. Inside, he discovered a note left by Sam directing him to a nearby cabin where she had fled for safety. He followed the note to the cabin, where he finally reunited with Sam.

Foreshadowing: The note Sam left serves as her final lifeline to Will, guiding him to her location.

• Will
• Sam
• cabin
• note
• reunion
• Seattle

The strange noise Sam heard was the initial seismic disturbance or massive earth movement that preceded the disaster. During her phone call with Will, she heard an ominous rumbling sound and became frightened before the line suddenly cut off. This noise marked the beginning of the catastrophic event that would devastate the West Coast.

Foreshadowing: Sam's distress call with the strange noise is the first indication that something is seriously wrong.

• Sam
• noise
• phone call
• seismic
• distress

The soldiers were blocking the interstate as part of emergency response to the disaster. They were attempting to control the chaos and prevent people from traveling into more dangerous zones. However, Tom, drawing on his Marine officer experience, convinced them to allow his vehicle through, recognizing the urgency of reaching Sam in Seattle.

Foreshadowing: The military blockade establishes the scale of the emergency and the desperation of travelers.

• soldiers
• military
• roadblock
• interstate
• Tom
• Marine

Will and Sam survive their immediate escape from the pyroclastic flow by fleeing in a vehicle toward the north. However, their fate remains uncertain as they drive into an unknown future, with the disaster's full scope still unclear and their survival far from guaranteed. The ending emphasizes their love and commitment despite the overwhelming uncertainty.

Foreshadowing: The final scene's desperate flight north leaves their ultimate fate ambiguous, reflecting the movie's theme of facing the unknown together.

• Will
• Sam
• survival
• ending
• pyroclastic flow
• escape