Chris Hemsworth and Tom Hiddleston discuss the perilous journey of brothers Thor and Loki in a featurette for the Marvel Phase Two sequel Thor: The Dark World. The story picks up after Marvel's The Avengers, with Thor taking his evil brother Loki back to Asgard as a prisoner. However, despite their differences, they must team up to bring down Malekith the Accursed (Christopher Eccleston) and his army of Dark Elves who threaten to destroy Earth and the Nine Realms. In addition to this behind-the-scenes video, Marvel has debuted two character posters featuring Malekith the Accursed and Idris Elba's Heimdall.