The universe is on the brink of darkness in "Thor: The Dark World," which picks up one year after the events of "Marvel's The Avengers." The new trailer finds Chris Hemsworth reprising his title role, with Natalie Portman returning as Jane Foster and Tom Hiddleston as the villainous Loki. Other familiar faces include Anthony Hopkins, Stellan Skarsgård, Kat Dennings and Idris Elba.
"Thor: The Dark World" hits theaters Nov. 8. Watch the trailer, debuting in conjunction with YouTube Geek Week, above.