Disney released the “Rogue One: A Star Wars Story” teaser-trailer today, after promoting the upcoming event all day on Wednesday. Some critics may argue that a prequel just after the success of “Star Wars: The Force Awakens” may be a step in the wrong direction for the studio, but with a Han Solo prequel and a possible Yoda prequel lined-up, it seems to be the roadmap that Disney is taking.

The upcoming film, which takes place just before the events of the original three installments, was directed by Gareth Edwards. As many fans might remember, the plans for the Death Star were stolen from the Empire by the Rebel Alliance and used to destroy the base. That actually happened twice. John Knoll wrote the story, which is based on the original characters created by George Lucas. Starring in the film are Felicity Jones, Mads Mikkelsen, Alan Tudyk and Diego Luna.

This will be the first of a long-list of planned standalone Star Wars stories, more will be confirmed as each new installment rolls along. This installment was produced by Kathleen Kennedy and is scheduled to release on December 16, 2016.

“Rogue One takes place before the events of Star Wars: A New Hope and will be a departure from the saga films but have elements that are familiar to the Star Wars universe,” says Kathleen Kennedy at the time of the film’s announcement. “It goes into new territory, exploring the galactic struggle from a ground-war perspective while maintaining that essential Star Wars feel that fans have come to know. Gareth is such an innovative director and I’m so excited to be working with him and the extraordinary ensemble cast he’s selected for ‘Rogue One.’”

Veteran ILM visual effects supervisor John Knoll, who shares a long history with the Star Wars movies, dating back to the mid-1990s, originated the idea for the movie. Allison Shearmur (The Hunger Games: Catching Fire, Cinderella), John Knoll, Simon Emanuel (The Dark Knight Rises, Fast & Furious 6) and Jason McGatlin (Tintin, War of the Worlds) are executive producers. Kiri Hart and John Swartz (Star Wars: The Force Awakens) are co-producers.

According to the studio, “To create the lived-in, realistic feel of Rogue One, Edwards chose Greig Fraser (Zero Dark Thirty, Foxcatcher) to be his director of photography and Neil Corbould (Black Hawk Down, Gladiator, Saving Private Ryan) to be his special effects supervisor.”

Star Wars and Lucasfilm veteran Doug Chiang (Star Wars: Episodes I-II, Forrest Gump) and Neil Lamont (supervising art director for the Harry Potter series, Edge of Tomorrow) will be the production designers. Additional crew members will include stunt coordinator Rob Inch (World War Z, Marvel’s Captain America: The First Avenger), creature effects supervisor Neal Scanlan (Prometheus) and co-costume designers Dave Crossman (costume supervisor for the Harry Potter series, Saving Private Ryan) and Glyn Dillon (costume concept artist for Kingsman: The Secret Service, Jupiter Ascending).