Jim Lockwood leaves for a work trip and arranges for John and Stew to stay with the neighboring Yardley family.

The power goes out while John and Stew are watching a movie at the Yardley house, silencing all electronics simultaneously.

A man named Clayton Presley visits the Lockwood house, claiming to look for Jim while secretly scouting the family's supplies.

Clayton Presley returns with armed men that night and holds a gun to John's head while the group steals all their food, water, and generator.

John refuses to eat or drink for nearly two days to convince a hopeless Stew to attempt the journey to Brighton Ranch.

John and Stew collect water from an abandoned house toilet, preparing to walk 96 miles across the Nevada desert to Brighton Ranch.

Will and Cleverly appear at the abandoned house searching for Jim Lockwood, and the four children decide to travel together.

The four kids begin walking along State Route 318 toward Brighton Ranch with a dangerously small supply of food and water.

Stew deliberately gulps an entire day's water ration to force John to acknowledge him as an equal partner in decisions.

A passing truck stops and the gruff driver forces John to hand over the group's empty canteen at gunpoint.

John discovers Clayton Presley and all six stolen water tanks at a campsite near the reservoir.

John and Cleverly steal a truck from the reservoir campsite and escape after the driver punches John through the window.

Stew confesses he secretly drank an entire canteen of water overnight and immediately vomits it back up on the roadside.

John reveals that Stew is diabetic and will die without the insulin kept by their friend Jess Brighton at the ranch.

Jess Brighton drives with John to the stranded group and gives Stewart the insulin that saves his life.

The Lockwood brothers John and Stew face a life-threatening power outage while their father is away and armed men steal every supply he left behind. Desperate and nearly out of water, John convinces a hopeless Stew to walk 96 miles across the Nevada desert to Brighton Ranch. They gain unexpected companions in siblings Will and Cleverly, who prove essential to the journey's outcome. A dangerous detour to a reservoir campsite leads John and Cleverly to steal a truck, moving the group much closer to their destination. The crisis deepens when Stew's diabetic emergency is revealed, forcing John to race alone to Brighton Ranch for life-saving insulin. Jess Brighton delivers the insulin just in time, and the brothers reconcile after a grueling ordeal that tests everything their father taught them.

The headline events of John and Stew's survival crisis.

Jim Lockwood notices John used the Nevada state flag as a curtain and reprimands him before leaving on his work trip.

John attends a community meeting and learns the blackout has been confirmed across multiple states with no clear end in sight.

The Yardley family announces they are leaving Lund so Mrs. Yardley can safely deliver her baby at a relative's house.

John decides not to evacuate Lund and moves back to the Lockwood house, confident their stockpile will see the boys through.

John hangs the Nevada state flag on his bedroom wall as his father suggested, waiting for Jim to come home.

During Clayton Presley's daytime visit, Stew secretly retrieves Jim's pistol and returns with it hidden in his waistband.

During a rest stop, John and Cleverly build a makeshift tarp shelter to shield the group from the desert wind.

The group boils the toilet water around a fire and forms a club called the Battle Born, lifting everyone's spirits.

Stew collapses laughing at Will's suggestion to ride horses to Las Vegas and struggles to catch his breath in John's arms.

John pulls Cleverly aside after the group camps for the night and reveals his secret plan to walk alone to the reservoir.

Cleverly refuses to let John go to the reservoir alone and insists on coming so they can both carry water back.

John and Cleverly sneak through the reservoir campsite in the dark, slashing the tires of every vehicle to prevent pursuit.

Clayton Presley spots John filling canteens from the stolen water tanks but stares into the fire and says nothing.

Nate Brighton steps out of the house with a rifle and refuses to give John any of Jess's insulin.

John leaves a threatening note signed by the Battle Born in Spike's truck before the group drives to Brighton Ranch.

Before the journey begins, Jim Lockwood's values and preparations quietly shape how John and Stew respond to the growing crisis around them. The blackout escalates from a neighborhood inconvenience to a multi-state emergency, and the boys face the robbery that strips away every safety net their father built. As the four kids walk the desert highway, small acts of courage, conflict, and teamwork reveal each character's true nature. John and Cleverly's risky night mission to the reservoir unfolds through careful planning, tire-slashing, and a tense improvised escape from the men who robbed the Lockwoods. Clayton Presley shows an unexpected moment of mercy at the campsite, complicating John's rage toward the man who threatened his brother's life. The journey ends with a paranoid confrontation at Brighton Ranch and John leaving a final defiant message for the people who wronged his family.

The key moments behind the scenes of the main story.

John and Stew share their stockpiled water supply with the Yardley family, who are already running dangerously low.

John marks each completed mile on his arm with a Sharpie as the group passes highway mile markers on the walk.

Will gives Cleverly his favorite hoodie to shield her skin from the harsh desert sun and wind during the walk.

Will loses the ChapStick John gave him within the first hours of the journey, revealing he is less capable than hoped.

Stew quietly asks John to apologize to Jess Brighton for him, signaling he no longer believes he will survive the trip.

John gives Cleverly a heartfelt apology for criticizing her grandparents after she calmly explains how wrong he was.

John overhears a radio broadcast at Clayton's camp announcing state borders are closed, explaining why Jim cannot return home.

Cleverly triggers a loud crash on the far side of the campsite, diverting the men so John can escape to the truck.

Stew steps into the middle of the road and shoves John angrily when the stolen truck returns to pick up the group.

Will discovers the Lockwood gas can in the stolen truck bed, providing just enough fuel to drive the group farther down the road.

Cleverly proposes that John walk ahead to Brighton Ranch alone while she and Will stay behind with Stew.

John pushes himself to alternate walking and running for miles until his water runs dry and his body gives out.

John wakes from an unexpected collapse on the dark roadside in the middle of the night, hours behind schedule.

The electricity flickers on for a brief moment during John and Nate's brawl in the tortoise enclosure, stopping them both.

Jim Lockwood leaves a voicemail telling his sons he is safe and nearly home, knowing they are okay because they have each other.

From the earliest days of the blackout, small decisions and quiet discoveries set the course for the Lockwood brothers' survival. As the four kids walk the Nevada highway, bonds form and vulnerabilities surface, with moments of honesty revealing what each character truly values. A desperate detour to the reservoir forces John to improvise under pressure, and an unexpected act of mercy from an enemy complicates his understanding of the crisis. Stew's declining health builds toward a devastating revelation about his diabetes and the mortal threat created by the theft of the generator and refrigerator. John's solo run to Brighton Ranch pushes him past his limits, while a brief flicker of electricity at Brighton Ranch creates the dramatic break that ends his fight with Nate. The ordeal resolves with Stewart's recovery, the brothers' reconciliation, and a voicemail from their father confirming the family will be together again soon.