The streets of D.C. are covered in snow. Most people are at work while Noel walks down the sidewalk. He checks various front doors on either side of the street until he finds a recent delivery sitting on a porch. He steals the box and heads for the Metro station.
He walks through the Metro underground and exits the far side. He walks away from the station and turns down a side street and arrives at his row house.
He puts the stolen box in his bedroom. Back in the living room, he turns on the radio and a kerosene heater. The DJ says it's going to hit zero degrees tonight. Noel grabs a bear and starts playing PlayStation. The fire alarm goes off and he opens the window to clear out the room.
Later, Noel sleeps on the couch when his brother Eric and Charlotte, Eric's girlfriend, arrive. Each carries a purloined package. They set their packages on the table and shut the window. They use towels to block the bottom of the front and back doors to keep the cold air out.
Noel wakes up and he questions them about their thefts. Eric brushes him off and kisses Charlotte. Noel starts playing his video game again.
Later, Eric has joined Noel in playing games. Charlotte lounges in a chair. Noel asks where Lea is. Charlotte doesn't know, but Lea finally arrives. She also carries a package and a can of kerosene. Noel asks her what took her so long and she replies with the can of kerosene. She sets her package on the table and Charlotte starts playing with the boxes.
Noel pauses the game. Lea sets the kerosene by the back door and goes to sit on the couch. Noel moves to the middle seat so Lea can't sit in the middle. She has to sit ONLY next to Noel. They ask who is going first and Noel says he'll go last.
Charlotte opens the box she brought in and finds several bags of chocolate and similar treats. They dig in and start eating. Eric says he's starving and Lea tells him to order a pizza. But he doesn't.
Eric opens his box and finds several pairs of panties. Charlotte asks what size? Eric says 12 and Lea claims dibs on the panties. He throws them at her and they exchange playful insults. Lea asks about Noel's box, but he defers.
Lea opens her package and finds two books, but nobody wants them. They talk about how this trip was a bust. Outside the snow is really starting to pile up, so they can't go on another run.
Noel brings his box in from the bedroom and everyone gets excited. Noel cuts the box open and inside is a high-tech safe with a 24-hour timer that is counting down. They try everything to open it, but nothing works. They decide they'll have to wait it out.
Noel gets a round of beers for everyone. Everyone speculates about what's in the box. Charlotte wants it to be drugs. They ask Noel, but he doesn't answer. Eric thinks it'll be valuable baseball cards. He used to have a Micky Mantle card he got from their dad, but he sold it. Lea wants it to be a fancy library. The fire alarm goes off again. Noel says the battery is dying and he throws it in the trash, disabling the alarm.
Charlotte and Eric make fun of their siblings and make out. Noel goes to the bathroom. Charlotte and Eric go into his bedroom to have sex. Lea goes into Noel's room and uses her vibrator. Noel comes back to the living room to find himself alone.
Later, Eric brings out the weed and Charlotte gets excited. Lea asks Noel to get more beers. He does, but says it's the last round. Eric reminds them that they have vodka, too. Quietly, Noel chastises Eric for bringing up their father around the sisters. Noel hates hearing about their father, who he says favored Eric. Noel smokes weed. Eric tries to open the box again. The kerosene heater keeps leaking carbon monoxide into the room.
Later, Eric is hungry, but they are snowed in. Even delivery drivers aren't allowed out, since it's a total lockdown. Eric eats the last of the saltines. He pulls out the vodka and washes the crackers down. He decides that since the box isn't going to open before the timer goes off, he's going to sleep. He sets his alarm and drinks some more vodka.
Eric reminds them that Noel never guessed about the contents of the box. Lea gets up to go to the bathroom. Noel snatches the bottle from him, smacking Lea in the face and knocking her down. Lea's okay, but everyone's mad at Noel.
Eric and Charlotte go to bed with the tension still high from Noel's accident. Noel stands in the kitchen drinking. He stares at Lea and then goes into his bedroom. He shuts the door behind him. Lea pulls a blanket off the back of the couch and curls up to sleep there.
Noel wakes up in the middle of the night. He walks into the living room to check on the box. It's okay and he's relieved. He goes into the bathroom and hears something in the shower. He pulls back the curtain to find a dead Charlotte, a needle still in her arm. He blinks and she's gone. It wasn't real. Back in the living room, he hears talking from Eric's room. It sounds like Charlotte is telling Eric that he has to take charge because Noel won't. Eric walks into the living room and opens the box.
Noel walks up behind him, carrying a baseball bat. Once Eric opens the box, Noel smashes his brother's head in with the bat. Noel blinks and discovers that Eric was never there and that Noel has broken the bat on the box. He hides the broken bat and goes back to bed. The camera shows that Lea was awake the whole time, she saw Noel's delusional violence and she's scared.
In the morning, Eric walks in and sits on the couch, talking to Lea, who couldn't sleep. Noel lays in his bed trying to overhear Lea and Eric. He gets up to peek on them and he sees Eric and Lea having sex on top of the box. Charlotte comes from Eric's bedroom, makes eye contact with Noel and kisses Eric, who is now having a three way. Noel slams the door and gets back in bed.
Later, Noel wakes up from a nap and sneaks into the living room. He sees Charlotte and Lea in a very familiar embrace with Lea and Charlotte on the couch. They are discussing why Noel can't have what's inside, it's all for them. The kerosene furnace shuts down. The alarm goes off on Eric's phone and the box's timer reaches 0:00.
Noel sneaks in behind them, carrying a fire axe. Eric opens the box and he and the sisters are excited by what's inside. Behind them, Noel let's them know he's there by smacking the axe against his hand. Eric asks him what's going on. The camera cuts to black and the screams start.
Later, in Eric's room, Noel has stacked the three dead bodies inside the closet. He's building a brick wall to close them off, Poe-style. He says he finally got what he wanted.