Jeremy Strong plays Mark Zuckerberg in 'The Social Reckoning,' a follow-up to 2010's 'The Social Network.' Here's everything we know.

Jeremy Strong as Mark Zuckerberg in "The Social Reckoning." Sony "The Social Reckoning" tells the story of Frances Haugen, a Facebook engineer turned whistleblower.

The movie is written and directed by Aaron Sorkin, and is a companion piece to "The Social Network." The movie opens in theaters on October 9.

Sixteen years ago, David Fincher wowed audiences with the dorm-room origin story of Facebook with " The Social Network.

" The movie would go on to earn eight Oscar nominations and three wins and make stars out of Jesse Eisenberg as its creator, Mark Zuckerberg, and Andrew Garfield as Zuck's former friend and collaborator, Eduardo Saverin.

Now, Aaron Sorkin, who won an Oscar for penning "The Social Network" script, is taking on the writing and directing duties for the movie's follow-up, " The Social Reckoning ." In this movie, things have changed dramatically for Zuckerberg (now played by Jeremy Strong), as Facebook has grown into one of the most influential companies on the planet.

But the company has some dark secrets.

Oscar winner Mikey Madison plays Facebook engineer Frances Haugen, who has put her trust in Wall Street Journal reporter Jeff Horwitz, played by Jeremy Allen White, to expose the company's internal research and decision-making.

Sorkin based the script on The Wall Street Journal's expansive investigative series, The Facebook Files , which delved into the social network's impact on youth mental health, misinformation, and the January 6, 2021 Capitol attack.

Sony will release the movie on October 9.

Here's everything to know.

Aaron Sorkin has wanted to do a "Social Network" follow-up for years.

Aaron Sorkin.

Ethan Miller/Getty Images Sorkin is no stranger to exploring power and the people who wield it.

When he wasn't creating shows like "The West Wing" and "The Newsroom," he wrote the scripts for movies like "The American President" and " Steve Jobs.