Odin: [narrates] Long before the birth of light, there was darkness. And from that darkness, came the Dark Elves. Millennia ago, the most ruthless of their kind, Malekith, sought to transform our universe back into the one of eternal night. Such evil was possible through the power of the Aether, an ancient force with infinite destruction.
Algrim: Malekith. Asgard forces are upon us.
Odin: [narrates] The noble armies of Asgard, led by my father, King Bor, waged a mighty war against these creatures.
Malekith: Send in the Kursed.
Odin: [narrates] As the Nine Worlds converged above him, Malekith could at last unleash the Aether. But Asgard ripped the weapon from his grasp. Without it, the Dark Elves fell. With the battle all but lost, Malekith sacrificed his own people in a desperate attempt to lay waste to Asgard's army.
Malekith: Their deaths will mean our survival. This war is far from over.
Odin: [narrates] Malekith was vanquished and the Aether was no more, or so we were led to believe.
Einherjar: Sire, the Aether. Shall we destroy it?
Bor: If only we could, but its power is too great. Bury it deep, somwehere no one will ever find it.
On their home world of Svartalfheim, Bor safeguards the Aether within a stone column. Unbeknownst to him, Malekith, his lieutenant Algrim, and a handful of Dark Elves escape into suspended animation.
In present-day Asgard, Loki stands imprisoned for his war crimes on Earth.
Loki: Hello, mother. Have I made you proud?
Frigga: Please, don't make things worse...
Loki: Define worse.
Odin: Enough! I will speak to the prisoner alone.
Loki: [laughs] I really don't see what all the fuss is about.
Odin: Do you not truly feel the gravity of your crimes? Wherever you go there is war, ruin and death.
Loki: I went down to Midgard to rule the people of Earth as a benevolent God, just like you.
Odin: We are not gods. We're born, we live, we die, just as humans do.
Loki: Give or take five thousand years.
Odin: All this because Loki desires a throne.
Loki: It is my birthright!
Odin: Your birthright was to die as a child! Cast out onto a frozen rock. If I had not taken you in, you would not be here now to hate me.
Loki: If I am for the axe, then, for mercy's sake, just swing it. It's not that I don't love our little talks, it's just I don't love them.
Odin: Frigga is the only reason you are still alive and you will never see her again. You will spend the rest of your days in the dungeon.
Loki: And what of Thor? You'll make that witless oaf king while I rot in chains?
Odin: Thor must strive to undo the damage you have done. He will bring order to the Nine Realms and then, yes, he will be king.
Meanwhile, Thor, alongside warriors Fandral, Volstagg and Sif, repel marauders on Vanaheim, home of their comrade Hogun.
Sif: I've got this completely under control!
Thor: Is that why everything's on fire?
It is the final battle in a war to pacify the Nine Realms following the reconstruction of Bifröst, the "Rainbow Bridge" between realms, which had been destroyed two years earlier. A megalith - a rock-like monster, enters the battle.
Sif: All yours.
Thor: [walks up to the megalith] Hello.
The megalith roars.
Thor: I accept your surrender.
The Marauders howl with laughter. Thor smashes the megalith into a pile of rocks.
Thor: Anyone else?
The Marauders all surrender.
Fandral: Perhaps next time you should start with the big one!
Hogun: Where do we go next?
Thor: Hogun, the peace is nearly won across the Nine Realms. You should stay here. Be with your people, where your heart is. Asgard can wait.
Hogun: You have my thanks.
Thor: As you have mine.
Thor: Heimdall, when you're ready.
Thor is teleported to Asgard by Heimdall.
Thor meets with his father, Odin.
Odin: Is Vanaheim secure?
Thor: As are Nornheim and Ria. Though our work would have gone more quickly with you at the fore.
Odin: You must think I'm a piece of bread that needs to be buttered so heavily.
Thor: That was not my intent.
Odin: For the first time since Bifrost was destroyed, the Nine Realms are at peace. They're well reminded of our strength and you have earned their respect, and my gratitude.
Thor: Thank you.
Odin: Nothing out of order except your confused and distracted heart.
Thor: This isn't about Jane Foster, father
Odin: Human lives are fleeting, they're nothing. You'd be better served by what lies in front of you. [Odin implies Sif] I'm telling you this, not as the Allfather, but as your father. You are ready. The time has come for you to take the throne. Embrace and celebrate what you have won. Join your warriors. Eat and drink, revel in their celebration. At least pretend to enjoy yourself.
Thor, Sif, Fandral, Volstagg, and many others are in a hall celebrating their victory.
Sif: There was a time you would celebrate for weeks.
Thor: I remember you celebrated the Battle of Harokin so much, that you nearly started the second.
Sif: Well, the first was so much fun. . . Take a drink with me. Surely the Allfather could have no further task for you tonight.
Thor: No, this is one I set myself.
Sif: It does not go unnoticed you disappear each night. There are Nine Realms. The future king of Asgard must focus on more than one.
Thor: I thank you for your sword and for your counsel, good lady Sif.
In London, astrophysicist Dr. Jane Foster's intern, is on a dinner date and appears distant to her suitor, Richard.
Richard: Hi. . . So what's the story with you?
Jane: Why does ther have to be a story? There's no story.
Richard: You spent the first ten minutes of our date hiding behind a menu that has three choices on it. It's either chicken, vegetarian, or fish, Jane. I think there's a story and I'm thinking the story involves a guy.
Jane: It's complicated.
Richard: Is he still around?
Jane: No, he went away.
Richard: I've been there. The going away. It's hard, isn't it? I was seeing a woman and she took a job in New York. Eventually, the distance killed it. And the fact that she kept sleeping with other dudes.
Richard: Oh, so many.
Darcy Lewis interrupts the dinner date. Richard thinks she's a waitress.
Richard: Hi, could we get some wine, please
Darcy: Sure, I'd love some.
Jane: Richard, this is Darcy. What are you doing here?
Darcy pulls up a chair to join them.
Richard: Oh. Hello.
Darcy: So, I show up to work at the lab, slash, your mom's house, fully expecting you to be moping around in your pajamas, eating ice cream and obsessing about you know Who. But you're not. You're wearing lady clothes. You even showered, didn't you'? You smell good.
Jane: Is there a point to all this?
Darcy: Right. You know all that scientific equipment you don't look at anymore? You might want to start looking at it again. This is the reason we came all the way out here.
The device is beeping rapidly.
Jane: It's malfunctioning.
Darcy: That's what I said.
Jane bangs the device on the table.
Darcy: That's what I did. I thought you would have done something a little more scientific.
Jane: I'm sure it's nothing.
Darcy: It doesn't look like nothing. It kind of looks like the readings that Erik was rambling about. Our friend Erik kind of went banana balls.
Jane: He's not interested. I'm not interested. It's time for you to go now.
Richard: Short but sweet.
Jane: She needs help.
Richard: I think I'm going to have the Sea Bass.
Jane: Sea Bass, Sea Bass, Sea Bass, Sea Bass. [keeps repeating] . . . Sea . . . Bass.
Richard: Jane, maybe you should stop saying Sea Bass and go after your friend. I'll just stay here and say "sea bass" alone.
Darcy is waiting just outside, in her car.
Jane: And I hate you.
Darcy: What? I said he was cute.
Jane: Just shut up and drive.
Darcy takes Jane to an abandoned factory.
Ian: [in the back seat] You need to take the next left.
Jane: Who's he?
Darcy: He's my intern.
Jane: You have an intern?
Darcy: Oh, yeah.
Ian: Hello, Dr. Foster. It's such a great honor to be working with you.
Jane: Right. I have to call Erik.
Ian: Oh, take a right. . . And a left.
Darcy: I have totally mastered driving in London.
Jane: Hi, Erik. It's me again. Where are you'? I came here because you said you were onto something, and then you vanish.
TV Reporter: I'm here at Stonehenge for what has been an interesting unfolding of events today. The police were called to the scene shortly after 11 A.M. this morning after a seemingly harmless rambler approached the area then, decided to strip naked and effectively terrorize tourists there with scientific equipment whilst shouting that he was trying to save them. The man, later identified as noted astrophysicist Dr. Erik Selvig has been called in for questioning by police.
Darcy: Come on, this is exciting. Look! The intern is excited.
Darcy: Do you want the phase meter?
Darcy: Bring the phase meter. The toaster-looking thing.
Ian: Yeah. I know what the phase meter is.
Jane: How do I change the ringtone on this thing?
Darcy: An astrophysicist with three degrees should be able to change her own ringtone.
Jane: Why are you calling me?
Darcy: I didn't want to shout. Intern says it's this way.
Ian: "Ian." My name's Ian.
Darcy: I am not getting stabbed in the name of science. . . . [to unseen others] It's okay, we're Americans!...
Jane: Is that supposed to make them like us?
They are greeted by children who guide them inside the factory where objects have begun to disobey the laws of physics and disappear into thin air.
Jane: Oh, they're kids.
Child: Are you the police?
Jane: No, we're scientists. Well, I am.
Child: We just found it.
Jane: Can you show us?
A boy easily lifts a large truck.
Darcy: That doesn't seem right.
They enter a warehouse and a child drops a bottle down a stairwell and it disappears.
Jane: Where'd it go?
The bottle reappears from above the stairwell.
Jane: That's incredible!
Jane throws a can in the stair well, it disappears, but does not reappear.
Jane: What happened?
Child: Sometimes they come back. Sometimes they don't.
Darcy: I want to throw something! Jane, give me your shoe.
Jane: I haven't seen readings like this since . . .
Darcy: New Mexico?
Jane: Don't touch anything!
Darcy: Give me your shoe.
Ian throws something into the stairwell. It disappears, but doesn't return.
Darcy: Were those the car keys?
Separating from the group, Jane is teleported to another world.
Jane has discoverd the chamber containing the Aether that was buried long ago by King Bor. She is infected by the Aether. She loses consciousness.
Somewhere in space among a belt of asteroids, the large Dark Elf ship activates. The Dark Elves awaken.
Malekith: The Aether awakens us. The convergence returns.
Thor joins Heimdall at the Rainbow Bridge on Asgard.
Heimdall: You're late.
Thor: Merriment can sometimes be a heavier burden than battle.
Heimdall: Then you're doing one of them incorrectly.
Thor: Perhaps. How fare the stars?
Heimdall: Still shining. From here, I can see nine realms and ten trillion souls. Do you recall what I taught you of the Convergence?
Thor: Yes. The alignment of the worlds. It approaches, doesn't it'?
Heimdall: The universe hasn't seen this marvel since before my watch began. Few can sense it, even fewer can see it. But while its effects can be dangerous, it is truly beautiful.
Thor: I see nothing.
Heimdall: Or, perhaps that is not the beauty you seek.
Thor: How is she?
Heimdall: She's quite clever, your mortal. She doesn't know it yet, but she studies the Convergence as well. Even . . . . .
Heimdall: I can't see her.
Alarmed by Jane's disappearance, Thor heads to Earth to search for her. Jane wakes up back at the abandoned warehouse.
Darcy: Jane! Where the hell were you?
Jane: Tell me you didn't call the police.
Darcy: What was I supposed to do'?
Jane: Not call the police.
Darcy: I was freaking out.
Jane: You call the cops, they call the Feds. Next thing you know, we have S.H.l.E.L.D. crawling all over - "Area 51-ing" the place.
Jane: We had a stable gravitation anomaly. We had unimpeded access. Our only competition was ten years old!
Darcy: You were gone for five hours!
It begins pouring rain, but Jane and Darcy seem to be shielded from it.
Darcy: That's weird.