Warner Bros. Animation, DC, and Warner Bros. Home Entertainment have released the first trailer for the upcoming Justice Society World War II animated movie.

The movie is officially described as a “time-skipping World War II thriller” that sees Barry Allen’s travel back in time thanks to his first encounter with the Speed Force. This will be the first animated movie to feature the golden age team of superheroes, which predates and precedes even the Justice League.

The official synopsis:

“Justice Society: World War II finds modern-day Barry Allen – prior to the formation of the Justice League – discovering he can run even faster than he imagined, and that milestone results in his first encounter with the Speed Force.

The Flash is promptly launched into the midst of a raging battle – primarily between Nazis and a team of Golden Age DC Super Heroes known as The Justice Society of America.

Led by Wonder Woman, the group includes Hourman, Black Canary, Hawkman, Steve Trevor and the Golden Age Flash, Jay Garrick.

The Flash quickly volunteers to assist his fellow heroes in tipping the scales of war in their favor, while the team tries to figure out how to send him home.

But it won’t be easy as complications and emotions run deep in this time-skipping World War II thriller.”

The cast is led by Castle star Stana Katic as Wonder Woman and Doom Patrol star Matt Bomer as The Flash/Barry Allen.

The cast for Justice Society World War II also includes:

• Elysia Rotaru as Black Canary.
• Chris Diamantopoulos as Steve Trevor.
• Omid Abtahi as Hawkman.
• Matthew Mercer as Hourman.
• Armen Taylor as Jay Garrick.
• Liam McIntyre as Aquaman.
• Ashleigh LaThrop as Iris West.
• Geoffrey Arend as Charles Halstead/Advisor.
• Keith Ferguson as Dr. Fate.
• Darin De Paul as Roosevelt.

Directed by Jeff Wamester (Guardians Of The Galaxy TV series) from a screenplay by Supernatural‘s Meghan Fitzmartin and Jeremy Adams, it will also come alongside the new animated short Kamandi The Last Boy On Earth.

Justice Society World War II is slated to premiere sometime in 2021. In the meantime, check out the trailer below (courtesy of IGN):