Ages back, Bor, father of Odin, goes against the Dark Elf Malekith, who looks to crush the universe utilizing a weapon known as the Aether. In the wake of prevailing over Malekith's powers, including improved warriors called the Kursed, on their home world ofsvartalfheim, Bor shields the Aether inside a stone segment. Unbeknownst to Bor, Malekith, his lieutenant Algrim, and a scoop of Dark Elves escape into suspended movement.
In present-day Asgard, Loki stands detained for his atrocities on Earth. Then, Thor, close by warriors Fandral,volstagg, and Sif repulse pirates on Vanaheim, home of their friend Hogun; it is the last fight in a war to mollify the Nine Realms after the recreation of Bifröst, the "Rainbow Bridge" between domains, which had been annihilated two years prior. The Asgardians soon discover that the Convergence, an uncommon arrangement of the Nine Realms, is inescapable; as the occasion approaches, entries interfacing the planets show up at irregular.
In London, astrophysicist Dr. Jane Foster and her assistant Darcy Lewis head out to a deserted processing plant where such entryways have seemed, upsetting the laws of physical science around them. Dividing from the gathering, Jane is teleported to an alternate world, where she is contaminated by the Aether. Heimdall alarms Thor that Jane has moved past his close omniscient sight, heading Thor to Earth. At the point when Thor finds Jane, she incidentally discharges an unearthly compel, and Thor comes back with her to Asgard. Odin, perceiving the Aether, cautions that the Aether won't just slaughter Jane, yet that its return proclaims a disastrous prediction.
Malekith, stirred by the Aether's discharge, transforms Algrim into a Kursed and assaults Asgard. Amid the fight, Malekith and Algrim hunt down Jane, sensing that she contains the Aether. Thor's mother Frigga is slaughtered securing Jane, and Malekith and Algrim are compelled to escape without Jane. In spite of Odin's requests not to leave Asgard, Thor reluctantly enrolls the assistance of Loki, who knows of a mystery entryway to Svartalfheim, where they will utilize Jane to draw and go up against Malekith, far from Asgard.