'Thor: The Dark World' Trailer Debuts (Video)

Chris Hemsworth and Natalie Portman return in the Marvel sequel.

Marvel Studios has unleashed the first trailer for Thor: Dark World, and once again worlds are in jeopardy.

After surviving an alien attack in The Avengers, Earth can’t catch a break, with a force Odin (Anthony Hopkins) says predates existence itself threatening the planet.

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Other notable points: Jane Foster (Natalie Portman) leaves Earth, and a creepy-looking Loki (Tom Hiddleston) plays a Hannibal Lecter sort of role, with Thor (Chris Hemsworth) consulting his imprisoned brother for advice.

“You must be truly desperate to come to me for help” Loki says.

“You should know when you betray me, I will kill you,” responds Thor, to which Loki rejoins: “When do we start?”

Thor: The Dark World was directed by Game of Thrones alum Alan Taylor. It hits theaters Nov. 8.