Plot details for the first Star Wars spin-off movie has been revealed by the film’s director.

The Jedis are all but extinct, the Old Republic is in turmoil and the threat of the Death Star is looming in Rogue One, fans learned at the Star Wars Celebration event in Anaheim, California.

Director Gareth Edwards debuted a tantalising concept reel to preview the mysterious film, which is part of a series exploring other stories outside of the core Star Wars saga.

“For more than 1,000 generations, the Jedi Knights were the guardians of peace and justice in the Old Republic. Before the dark times. Before the Empire,” the voiceover reads, as the camera shows a ghostly Death Star hovering in the clouds.

Gareth Edwards
Gareth Edwards (Jon Furniss/Invision)

Set between the third and the fourth movies in the Star Wars saga, the film will follow a band of resistance fighters who unite to steal the Death Star plans and “bring a new hope”, referring to the subtitle of the original Star Wars.

Felicity Jones, who recently garnered an Oscar nomination for her role in The Theory Of Everything, is the only confirmed cast member for the film, which will shoot in London this summer for a December 16, 2016 release. She will play a rebel soldier, the director said.

Edwards said that Felicity’s character will not just be a stoic soldier, but a complex, fully rounded human.

Felicity Jones
Felicity Jones (Chris Pizzello/Invision)

“We wanted to see fear, warmth, all of those aspects that everybody has,” he said, adding that she embodies “the complete package”.

He continued that in the world of Rogue One, the “absence of Jedi is omnipresent”.

The characters in the film realise that the “gods are not coming to save us”, he said. “It comes down to a group of people who don’t have magical powers who band together to bring hope to the galaxy.”

Star Wars Celebration JJ Abrams
Star Wars director JJ Abrams meets fans at the Star Wars Celebration (Richard Shotwell/Invision)

Cinderella scribe Chis Weitz wrote the screenplay based on an idea from visual effects supervisor John Knoll.

Josh Trank, who is set to direct the next, still untitled Star Wars anthology film, did not attend the event although he was originally scheduled to appear.

Kiri Hart, vice president of development for Lucasfilm, said: “We wanted freedom to do some films that would be able to stand on their own and tell unique stories. They can still feel like Star Wars and be Star Wars.”