On the beautiful roads of Iceland, a young American couple is arriving to
spend a wonderful vacation together. Riley has brought an old camera to take pictures,
and his girlfriend Jenai gladly poses for them. After settling into their hotel room, they go
on a tour around Iceland, which takes them through active geysers and hot springs. Later over dinner,
Jenai wonders if they'll be able to find film for such an old camera, but Riley assures her that he
brought enough and turns down her offer to buy him a modern one. He explains that he doesn't
want a computer auto-correcting everything and prefers to capture the moment with all
its imperfections. Afterward they continue to visit all the important touristic places, like
a historic church and some beautiful waterfalls. In the evening they return to the hotel to sleep,
but later in the middle of the night, Jenai wakes up and looks through the window, noticing a bright
light suddenly taking over the sky for a few seconds before disappearing. The next morning,
the couple goes downstairs to have breakfast, but they see the buffet empty and not a single
employee around. They decide to have breakfast at a café instead, but when they go outside,
they find the streets empty and silent too. After double-checking the time to be sure it
isn't too early, they wonder if it's a special holiday, and begin entering different buildings,
to no avail. It's as if every single person in the city has disappeared except them. Panicking,
they do a bit more wandering and searching until they finally give up and accept the truth: they
are alone. They try to call relatives on their phones, but nobody answers, and when Riley checks
the television, he discovers that all the news channels are down. Social media also is silent,
and the couple decides to return to the hotel. Riley uses his laptop and confirms the internet
is working, but news sites haven't been updated since last night. Desperate for an explanation,
Riley checks security cameras across the world, but to their shock the streets are
empty literally everywhere. Deep in denial, Riley says there's got to be someone else out there,
so they head out to search for people again, but the result is the same. Getting agitated
and desperate for a solution, Riley notices a car with an open window and they use it
to search the city more thoroughly, yet still finding nobody. Eventually they drive all the
way out to the countryside, never finding anyone. Jenai wonders if the apocalypse has finally come,
and upon Riley's prodding she tries contacting her mother again to no avail. When they finally give
up, they try to find comfort in the fact they least they have each other. When night falls,
they return to the hotel, and Jenai is so tired and upset that she gets cranky when she has to ask
Riley twice to close the blinds. The next morning, Riley wakes up first and tries to wake Jenai too,
but she is still in a bad mood and refuses to leave the bed. Riley leaves her alone for a while,
and when he returns later, Jenai asks him how they'll get home, but Riley has no idea. Jenai
still feels homesick, so Riley tries to make the gingerbread latte she likes so much. It's
not very good, but Jenai appreciates the effort. Afterward they decide to loot the nearby grocery
store. Jenai only has a few things in her hand out of habit, but Riley has entered survival mode and
walks by pushing trolleys full of groceries. Then Riley goes looking for a new car with more room to
carry all the stuff they want, since nobody can stop them now. When they return to the hotel,
Riley grabs their bags and announces it is time for an upgrade, so the couple goes looking for
a nice house to stay in. Once they find one they both approve of, Riley quickly gets comfortable,
but Jenai can't help wondering if it truly is this simple. Next they go to a clothing store.
Jenai again starts only grabbing an item or two, but soon Riley reminds her of the situation and
together they try all kinds of outfits without limiting themselves, which brings a bit of fun
back into their lives. They also take some alcohol and drink while playing Monopoly and
bantering playfully. The following morning during breakfast, Jenai wonders if they are being tested,
and in return Riley asks if she believes in God and if everything happens according to his plan.
However Jenai replies that belief and faith are different things. Trying to comfort her,
Riley tells her that the world is currently their oyster to do whatever they want. Afterward they
drive to the countryside, and Jenai is so relaxed that she puts her feet on the window and lets the
wind take her shoes away. Eventually they make it to the geothermal pools, and Riley lays a
cloth on the grass so they can lie together and cuddle. When Riley decides to take a nap,
Jenai stands and starts removing her clothes while making her way to the pool. Riley notices this and
follows her as he takes pictures until Jenai has finally removed her last accessory and jumps into
the water. Riley doesn't hesitate to follow her example and soon the couple is getting frisky in
the pool. Then the couple takes a nap together, and a few hours later, Jenai wakes up first and
decides to go for a walk through the beautiful fields. When Riley wakes up too, he continues
taking photos of her looking beautiful among the flowers. In the evening they return to the city,
and in the grocery store, Riley is fooling around like a child, which makes him fall and get his arm
hurt. That evening they agree to have a romantic dinner and they even dress up all nicely for the
occasion. However Jenai can't stop thinking about what happened in the store and calls Riley out
for his behavior, pointing out they need to be careful because if something happens there are
no doctors or firemen that can help them. However Riley thinks she is exaggerating and just wants
to keep on having fun, which upsets Jenai and causes her to storm off. Moments later, Riley
walks through the deserted city with a bouquet in his hand and makes it to the house they claimed,
finding Jenai lying down in a bad mood. Not liking seeing her like this, Riley promises he
will be more careful from now on. Then Jenai gets up and talks about her favorite book,
regretting that she didn't bring it for her vacation. Riley suggests finding another copy
around, but Jenai only wants her own because it was a gift from her father and it served as
her record of all the important and meaningful things that happened in her life. For example,
the first time she admitted she loved Riley she wrote it in that book. Riley smiles but
also tells her they have everything they'll ever need: beautiful scenery and each other. The rest
they can just build it. Jenai doesn't take it well and insists that she wants to go home,
but there is nothing they can do about it. After another excursion and lots of new pictures,
the couple returns home and Jenai discovers the tap water isn't running anymore. Riley
eats blueberry yogurt and this triggers another argument because that's not the one that expires
first. Jenai wants him to be more careful with the food because they won't have infinite stock,
and Riley responds they can plant and hunt, yet Jenai mocks the idea. Sometime later,
Riley swims alone in the pool while Jenai walks to a church where she finds a statue with weird marks
on it. Jenai can't help talking to it, desperate for a sign that tells her the meaning behind all
this. During another trip outside the city, the couple arrives at some hot springs. Riley asks
Jenai to listen to the heartbeat of the world and admits he loves Iceland. Afterward they reach a
beach with volcanic rocks and Riley tries to share a legend about trolls but Jenai ruins the moment
by pointing out they're out of drinking water. Next they stop by an abandoned plane fuselage, and
Riley takes a bunch of pictures because he thinks it's beautiful. However this upsets Jenai and
points out it's just dead garbage that outlived its usefulness, she also yells that Riley can't
just change the scenery to magically cheer her up. An exasperated Riley asks what he should do, but
Jenai just tells him to open his eyes and drives away, leaving Riley to sleep inside the plane.
That night Jenai sleeps in the car in the middle of nowhere, and in the morning she returns to the
plane to check on Riley. When he wakes up, neither of them says a word, Jenai simply shares something
to drink before they return to the city together. The rest of the day, Riley walks around town and
takes photos of all the graffiti and public art he can find. A particular piece of artwork with
haunting eyes spooks the heck out of him, causing him to toss his film away. Meanwhile Jenai passes
the time scrolling through her laptop, looking for notifications and trying to get in contact with
people, to no avail. Later Jenai decides to go to church to pray while Riley visits various stores
to start collecting pieces for a project he has in mind. When he takes the elevator, he is startled
by the doors suddenly closing, and for a moment he thinks he's locked inside. Fortunately the doors
soon reopen on their own and Riley can go home. He doesn't see Jenai around when he arrives, so keeps
himself busy building contraptions. Meanwhile Jenai is feeding a horse and enjoying the company
of the animals, since it's the only new sight of life she's seen in a while. Sometime later,
the couple is traveling again, and Jenai drives while listening to old messages in her voicemail
in order to remember what her family and friends sounded like. After passing near some glaciers,
they get out of the car and explore around. Then they sit together on a glacier and Jenai
talks about the force of nature that wipes the Earth clean, saying that maybe God got impatient.
However Riley thinks the future is uncertain and he won't give up on their relationship. Later,
the couple returns to the city and Jenai finds a place to develop the pictures. She also finds a
flower shop, but her excitement quickly disappears when she realizes all the flowers are dead. Riley
convinces her to look for flowers somewhere else, pointing out that they need a change of scenery.
Eventually they arrive at a lakeside cabin, which has a fireplace that they want to use.
Riley decides to gather some wood and when he approaches the forest, he is incredibly shocked
to find one more human around called Nils. The man doesn't seem to be doing well and the couple
immediately shares their supplies with him before taking him inside. Nils confirms he hasn't seen
anyone else either and that he left the city after the incident because if the world ends,
he wants to be here when it happens. During their talk, Nils doesn't stop coughing badly, and Riley
tries to encourage him to survive with them. Jenai is also grateful that they've found him,
but no matter what words they use, Nils seems to have accepted his fate, which irritates Riley.
Later in the middle of the night while Riley sleeps, Jenai sits in front of the fireplace and
tells Nils about their vacation and how much she misses home. In return Nils tells him about his
own family, which became strangers to him because he spent his life on the sea. He also mentions the
Welsh word "heareth", which means grief for a home one can never return or never was. Jenai thinks
God has forsaken them, but Nils thinks everything is essentially meaningless. The next morning,
Riley wakes Jenai up and brings bad news: Nils died in his sleep. Jenai goes to confirm it with
her own eyes while Riley goes outside to start digging a hole to bury him. When Jenai comes out,
she says she doesn't see the point in burying Nils, triggering another argument over if they
should concentrate on finding more people or on surviving. Riley says they've already searched
enough, but Jenai thinks they hadn't really been looking. When they return to the city, Jenai grabs
some duct tape and begins marking abandoned houses with it. Riley follows her to point out that this
isn't finding the living, it's actually marking the dead, he also begs her to come home. However
Jenai says that there's no home here. Another argument ensues, and while Riley can tell Jenai's
looking for celestial answers, he thinks it's pointless because they can't change anything
anyway. He tries to convince Jenai that they can still live a good life together, but Jenai
admits she doesn't even know what that is anymore. Sometime later, Riley finishes building a windmill
before he tries with Jenai again. He leads her to a river and asks her to remember the glacier they
sat on, explaining that the water that melts from that glacier is what creates this river. His point
is to remind Jenai that life is always trying, causing the couple to share an emotional hug and
a kiss. Later over dinner, they share the last of their water. While she's washing the dishes,
Jenai's laptop receives an email, and Jenai runs to check it with obvious excitement. However when
she opens it, she discovers it is just a photo sent by Riley. Jenai cries in disappointment
and frustration as she finally accepts that there's nobody else out there. The next morning,
Riley finds a huge white envelope with his name on it. After activating the water pump he's built,
he checks the envelope's contents and finds the developed photos. However seeing Jenai's
expression on them worries him, so he rushes out of the house and drives around the city to find
her. Eventually he finds Jenai's car parked near the geothermal pool, and when he comes closer,
he's devastated to find Jenai's body floating in the water. It seems she ended things for herself
because she couldn't take the situation anymore. Riley jumps into the pool and takes Jeani out,
but there's nothing he can do. Then he tries to follow her example, but his instincts to survive
are too strong. Afterward, Riley clings to Jenai's body, crying his heart out. Once he's calmed down,
he decides to walk away, leaving Jenai behind. Riley returns to his car and starts driving away,
wondering what will happen to him now he's alone for real.