Four weeks after a mysterious, incurable virus spreads throughout the UK, a handful of survivors try to find sanctuary.

Jim's Mother: [written on a note to Jim] With endless love, we left you sleeping. Now we're sleeping with you. Don't wake up.
Jim: That was longer than a heartbeat.
[Hannah hits Jim over the head with a bottle]
Selena: Hannah, it's OK. He's not infected.
Hannah: But I thought he was biting you.
Jim: Kissing. I was kissing her. Are you stoned?
Selena: It's a long story.
Mark: A man walks into a bar with a giraffe. They both get pissed. The giraffe falls over. The man goes to leave and the bartender says, "Oi. You can't leave that lyin' there." And the man says, "No. It's not a lion. It's a giraffe."
[Jim doesn't respond]
Mark: Completely humorless.
Jim: Oh, great. Valium. Not only will we be able to go to sleep, if we get attacked in the middle of the night, we won't even care.
Selena: It started as rioting. But right from the beginning you knew this was different. Because it was happening in small villages, market towns. And then it wasn't on the TV any more. It was in the street outside. It was coming in through your windows. It was a virus. An infection. You didn't need a doctor to tell you that. It was the blood. It was something in the blood. By the time they tried to evacuate the cities it was already too late. Army blockades were overrun. And that's when the exodus started. Before the TV and radio stopped broadcasting there were reports of infection in Paris and New York. We didn't hear anything more after that.
[last lines]
Selena: Do you think he saw us this time?
Frank: You'd never think it. Needing rain so badly. Not in fucking England!
Sergeant Farrell: Well, I think Bill's got a point. If you look at the whole life of the planet, we... you know, man, has only been around for a few blinks of an eye. So if the infection wipes us all out, that is a return to normality.
Jim: What do you mean there's no government? There's always a government, they're in a bunker or a plane somewhere!
Jim: Do you know I was thinking?
Selena: You were thinking that you'll never hear another piece of original music ever again. You'll never read a book that hasn't already been written or see a film that hasn't already been shot.
Jim: Um, that's what you were thinking.
Selena: No. I was thinking I was wrong.
Jim: About what?
Selena: All the death. All the shit. It doesn't really mean anything to Frank and Hannah because... Well, she's got a Dad and he's got his daughter. So, I was wrong when I said that staying alive is as good as it gets.
Jim: See, that's what I was thinking.
Selena: Was it?
Jim: Hmm. You stole my thought.
Selena: Sorry.
Jim: It's okay. You keep it.
Major Henry West: This is what I've seen in the four weeks since infection. People killing people. Which is much what I saw in the four weeks before infection, and the four weeks before that, and before that, and as far back as I care to remember. People killing people. Which to my mind, puts us in a state of normality right now.
[finding a crate of fresh apples in a pile of rotting produce]
Frank: Mmmmmm... Irradiated!
Selena: He was full of plans. Have you got any plans, Jim? Do you want us to find a cure and save the world or just fall in love and fuck? Plans are pointless. Staying alive's as good as it gets.
Jim: No, no. No, see, this is a really shit idea. You know why? Because it's really obviously a shit idea.
[Jim is walking into a restaurant]
Selena: We have enough food.
Jim: Yeah, but we don't have any cheeseburgers.
Selena: What's up?
Jim: Nothin'. Got a headache.
Selena: Bad?
Jim: Yeah, it's pretty bad.
Selena: Well, why didn't you say anything before?
Jim: Well, because I didn't think you'd give a shit.
Frank: [to a crow eating a dead body] Get out of it.
Frank: Get out of it!
[kicks fence]
Jim: And then I wake up today in hospital. I wake up, and I'm... I'm hallucinating or I'm...
Mark: What's your name?
Jim: Jim.
Mark: I'm Mark. This is Selena. OK, Jim. I've got some bad news.
Jim: World's worst place to get a flat, huh?
Frank: Agreed. I think we better do this quick?
Hannah: Are you trying to kill me?
Selena: No, sweetheart. I'm making you not care. Okay?
Selena: [the gang enters an abandoned grocery store] Let's shop.
[an infected is shot and falls to the ground]
Private Jones: Mitch, I fucking got one!
Corporal Mitchell: What you want a fucking sweetie? Keep shooting, you cunt!
Selena: I don't want her to have to fucking cope.
Mark: ...i remember my dad had all this cash.
Mark: Even tho' cash was completely useless.
Mark: i remember the ground was soft.
Mark: i looked down and i was standing on all these people, like a carpet.
Mark: No-one could run, all you could was climb... climb over more people...
Major Henry West: I promised them women.
Hannah: [to Major West] I don't want to eat. I want to bury my dad. He's one of the people you're talking about!
Major Henry West: You killed all my boys...
Sergeant Farrell: Think! Just think! What would you do with a diseased little island?
Sergeant Farrell: They've quarantined us. There is no infection... Just people killing people... HE'S INSANE!
Jim: Please...
Corporal Mitchell: Believe me, I'm not interested.
Selena: [after she and Jim have been taken in by Frank and Hannah] They probably need us more than we need them.
Jim: [walking around deserted London] Hello?
[first lines]
Activist: Bingo.
Major Henry West: Have you met our "new age" sergeant? Tell me, Farrel, why exactly did you join the army?
Scientist: In order to cure, you must first understand.