Ben Affleck and Matt Damon make movie magic in 'Project Greenlight' teaser

https://youtu.be/4u32UD9yE8I

The cinematic bromance of the century -- Matt Damon and Ben Affleck -- are back together again. But they're not here to make a movie, they're here to help someone else make one.

Their HBO show Project Greenlight (which was ironically has not been greenlit since its last episode in 2005) is making a return in "the riskiest season we've ever done," Affleck says in the teaser. Executive producers Affleck and Damon mentor an amateur -- and seemingly egotistical -- director on his first feature film. After a rigorous online selection process, the show will follow the winner throughout the filmmaking process.

Project Greenlight premieres Sept. 13 on HBO.