Five friends head to a remote cabin, where the discovery of a Book of the Dead leads them to unwittingly summon up demons living in the nearby woods. The evil presence possesses them until only one is left to fight for survival.

Abomination Mia: I will feast on your soul!
Mia: Feast on this, motherfucker.
[last lines]
Ash: Groovy.
Mia: [possessed] Why don't you come down here so I can suck your cock, pretty boy?
David: Mia?
Mia: Mia's not here you fucking idiot! Your little sister's being raped in hell!
Abomination Mia: I will feast on your soul!
Mia: Feast on this motherfucker!
Mia: [possessed] Baby, little baby / It's time to say goodbye/ Baby, little baby / I'll miss you day and night/ Baby, my sweet baby / I'll write you every day / Baby, don't cry, baby / I wish that I could stay
David: [David is patching up Natalie after she cut off her possessed arm] Everything's gonna be okay. You're fine.
Eric: She just cut her fucking arm off. Does that sound fine?
Mia: [possessed] Why do you hate me, David? I know you do. You left home. You left me all alone with our sick mother... And I was just a kid. You made me lie. Every time she screamed your name I told her you were coming to see her, like you promised. But you never did. I know mother hates you now. And she waits for you in hell.
David: [Walking into Mia's room] You have to get out of these clothes. Go take a shower.
Mia: David... please... please! You... have... to get me... out of here.
David: No one said this would be easy, but...
Mia: [Grabbing David's arm] No! No. You don't understand. There was something in the woods, David... and I think it's in here with us... now.
David: [Confused] Here, in this room?
[Mia nods; David walks up to the door]
David: Yo know it's all in your head. Change your clothes, take a shower, and try to get it together. You'll start to feel better tomorrow. Soon, all this will be over and you'll be glad we were such assholes.
Eric: I just don't want to become the devil's bitch.
Mia: [possessed, to David] Why don't you come down here and let me suck your cock, pretty boy?
Abomination Mia: You're gonna die here, you pathetic junkie!
Mia: I've had enough of this shit.
Mia: [possessed, to Natalie] Kiss me you dirty cunt!
Eric: [reading from the Naturom Demonto] Kunda... Astratta... Montosse... Canda.
Mia: [possessed; as Natalie is about to amputate her infected arm] Don't do it, you little bitch! Don't cut it off!
Mia: [pretending to be normal] Natalie?
Natalie: Mia?
Mia: [Crying] Natalie? What am I doing down here? My leg hurts, I can't move.
Natalie: I'm gonna come down there ok?
Mia: Why did you lock me down here? You were supposed to help me.
Natalie: We're trying to help you, ok? But you grew out of control, Mia. You got violent and we didn't know what else to do... Mia, I think something really terrible has happened, and we have to get out of here now, ok?
Mia: You don't understand. He's not gonna let you leave, and he's not gonna stop till he has you. Until he has all of you!
Mia: [possessed, to Natalie] I can smell your filthy soul.
Abomination Mia: You're gonna die here, you pathetic junkie.
Eric: I don't think we're dealing with a freakin' panic attack here!
Mia: I don't know what's wrong with you people. There's something dead, and it reeks.
Olivia: You're just extra sensitive right now. There's no smell.
Mia: [after finding the trapdoor to the basement and opening it] What's your medical diagnosis now?
Olivia: It fucking stinks.
Natalie: I had to do it. I feel much better now.
Mia: I know, I look like road kill.
David: No. You look beautiful, as always.
Mia: And you're a charming liar... as always.
Eric: [possessed] He's coming.
[as the Deadites take possession of Mia]
Cheryl: You will die! Like the others before you, one by one, we will take you!
[Mia becomes eerily calm]
Mia: You're all going to die tonight.
Eric: What kind of a virus makes someone cut their face off with a piece of glass?
[from trailer]
David: Everything's gonna be fine!
Eric: Everything's gonna be fine? Everything's gonna be fine. I don't know if you noticed this, but... Nothing's fine. Everything's been getting worse... every second.
Mia: You shouldn't have touched anything from that basement.
Mia: Promise, you'll stay till the end.
[from trailer]
Mia: [possessed] Cut it! Cut it!
Mia: [to Natalie] Kiss me, you dirty cunt!
Eric: [Near death; smiling] David, I missed you, man!
Mia: [possessed] Why do you hate me, David?
Eric: [Eric just walked into Possessed Olivia after cutting out her cheek] Oh, my god! Why the fuck did you do that?
Olivia: [See's Eric reading through the Naturom Demonto] I thought I told you to throw that away. Shouldn't you be out there helping your best friend?
Eric: I don't know who you're talking about.
Olivia: Come on, don't act like you don't care about him. I know you do.
Eric: Well, I think we can all agree that he stopped giving a shit about us for the past century.
Olivia: Well, he's here now.
Eric: Yeah... truly amazing.
[from trailer]
Eric: [explaining Mia's possession] This thing is attached to Mia's soul like a leech. If I'm reading this right, it's become her. If we want to help Mia... we're gonna have to kill her.
Natalie: [after Mia, possessed, has been thrown into the cellar] For God's sake, what happened to her eyes?
Olivia: [after Mia scalded herself in the shower] No one could have known she was going to do this.
Natalie: No, YOU should have known! We've all been following your lead since we got here!