After his achievement with last year's record-breaking adaptation of Stephen King's It, Andy Muschietti should be able to do anything his heart desires -- once he delivers the sequel, It: Chapter Two, of course. For his next project, the filmmaker, who got his start turning his own short film into the feature Mama, care of mentorship from Guillermo del Toro, could even take things a little easy.

Instead, however, he is going for something more ambitious: according to Variety, Muschietti will direct a movie based on the best-selling manga Attack on Titan for Warner Bros. What is Attack on Titan and who is joining the filmmaker in his quest to complete such an epic adaptation of a very popular property? Read on for everything we know about the movie so far. 

What is Attack on Titan?

Written and illustrated by Hajime Isayama, the manga debuted in 2009 and has since grown to 26 complete volumes, which have sold more 76 million copies. The premise of Attack on Titan involves a dystopian future where cities are surrounded by enormous walls built to protect people from giant "Titan" creatures outside. 

Is there already an Attack on Titan movie?

The manga has spread to many other forms in Japan, including novels, video games, anime TV series and films, and even a live-action movie. The last of these was broken up into two parts, which It: Chapter One and It: Chapter Two director Andy Muschietti can relate to. As far as we know, the American adaptation will not have any connection to the Japanese movies.

What makes Andy Muschietti the right director for the project?

As noted, Muschietti has experience directing a movie based on an epic literary work, one that didn't adapt the entire book and yet was still satisfying as a singular entity. With Attack on Titan, which might seem daunting given the extent of the manga series and its ancillary franchise, Muschietti could similarly focus on delivering a movie that works on its own or spawns more installments. 

Who else is involved with the adaptation?

The filmmaker will be joined again by his producing partner sister, Barbara Muschietti (It: Chapter One). She is teaming up with actor-turned-producer Masi Oka (Death Note) and Harry Potter movie franchise mastermind David Heyman, who certainly knows something about turning a wildly popular, multi-volume literary property into a big-screen series.

When can we see the movie?

Stay tuned, as we're a ways away from this even going into production. In the meantime, Muschietti's It: Chapter Two will be out on September 6, 2019.