Eons ago, Bor, father of Odin, vanquished the Dark Elves led by Malekith, who sought to return the universe to its state before creation using a force called the Aether. Fighting off Malekith's enhanced warriors, the Kursed, Bor contains the Aether within a stone column. Unbeknownst to him, Malekith, his lieutenant Algrim and others escape into suspended animation. In the present, in Asgard, Loki stands before Odin in shackles and is sentenced to imprisonment, while Thor, alongside warriors Fandral, Volstagg and Sif repel invaders from Vanaheim, home of their comrade Hogun; it is the final battle in a two-year war to make peace in the Nine Realms. In London, astrophysicist Jane Foster, who has not seen Thor in that time, attempts a lunch date with a man named Richard but is interrupted by her intern Darcy Lewis. She takes Foster to an abandoned factory where the laws of physics are upended in spots and objects disappear into thin air. Foster, after bringing her own scientific equipment to the factory, is sucked into a vortex where the Aether enters her.
The Asgardians learn a rare alignment of the Nine Realms is imminent, and at spots where the Realms touch, as at the factory, portals are created. When Heimdall tells Thor that Foster is no longer on Earth, Thor begins a search for her there. She has awakened in the factory after hours in the other realm, and finds herself releasing powerful energy when a police officer on the scene touches her. Sensing the force's unearthly nature, Thor brings Foster to Asgard, but its physicians cannot remove it. Odin realizes she is the Aether's vessel and this heralds a catastrophic prophecy. Frigga—Odin's wife, Thor's mother and Loki's adoptive mother—takes Foster under her wing. In holographic form, Frigga visits Loki in his cell to convey her love and disappointment.
Malekith and his forces, awakened by the Aether's release, turn Algrim into a Kursed and attack Asgard. Malekith and Algrim kill Frigga while searching for Foster, and are attacked by Thor, forcing their retreat. Thor is ordered to remain and protect Asgard rather than pursue revenge. Following Frigga's funeral, Thor decides to take Foster from Asgard to lead Malekith away. He reluctantly teams with Loki, who knows a secret portal to Malekith's world. With Volstagg and Sif guarding his flank, the two commandeer a Dark Elf spaceship and escape with Foster.
The above taken from Wikipedia.
A truly entertaining movie, filled with toe-bending actions and excitement. Kept me engrossed from start to ending! Totally worthwhile to watch it in the cinema. Storyline may be predictable at some point but it blended in smoothly. I had high expectation for this after watching the trailer and it has definitely met it! Do stay back after the main credit as there is a short snippet, as usual, leading to the 3rd instalment ya... of course expectation is getting higher!
Directed by: Alan Taylor
Starring: Chris Hemsworth, Natalie Portman, Tom Hiddleston, Anthony Hopkins, Renee Russo