Zack Snyder's Justice League

Zack Snyder's Justice League is the 2021 director's cut and the original version of the 2017 American superhero film Justice League, the fifth film set within the DC Extended Universe (DCEU), which is based on the DC Comics superhero team Justice League. It is director Zack Snyder's original vision of the film prior to his departure from the production. The film follows Batman (Ben Affleck), Wonder Woman (Gal Gadot), Cyborg (Ray Fisher), Aquaman (Jason Momoa), the Flash (Ezra Miller), and Superman (Henry Cavill) as they form an alliance to stop the extradimensional New God Steppenwolf (Ciarán Hinds) and his army of Parademons from conquering Earth for his overlord, Darkseid (Ray Porter).

The production of the theatrical film was difficult, and the script frequently underwent major changes. In May 2017, Snyder stepped down during production following the death of his daughter, and Joss Whedon was hired to finish the film, completing it as an uncredited additional director. Whedon wrote and directed new sequences and incorporated a brighter, more humorous tone while significantly reducing the runtime in accordance with directives from Warner Bros. Pictures. The theatrical version polarized critics and underperformed at the box office, prompting Warner Bros. to develop future DCEU films around individual characters with less emphasis on a broader shared universe.