Froseth will play the title character and Plummer the boy who longs for her in the adaptation of John Green's novel.

Hulu's limited series Looking for Alaska has cast its two lead roles, with Kristine Froseth as the title character and Charlie Plummer as the boy who falls in love with her.

The eight-episode series, based on John Green's YA novel of the same title, comes from Josh Schwartz and Stephanie Savage's Fake Empire and Paramount TV. Schwartz (Runaways, The O.C.) wrote the pilot and will serve as showrunner.

Green announced the casting Tuesday on Twitter, writing that "it was really special to have a conversation with the people who will become Miles and Alaska. I'm so grateful to them and everyone involved in the Looking for Alaska series."

Looking for Alaska centers on Miles "Pudge" Halter (Plummer), a teenager from Florida who enrolls at a prestigious boarding school in Alabama hoping to find a deeper perspective on life. He discovers that Culver Creek Academy isn't that different from his old high school, except for the clique of outcasts that instantly accepts him. The group includes Alaska Young (Froseth), who is mercurial, unpredictable and instantly attractive to Miles. She's also hiding a troubled past, and when she dies unexpectedly, Miles and his friends try to make sense of what happened.

Froseth starred in the Netflix teen rom-com Sierra Burgess Is a Loser, which was released in September, and the streamer's thriller Apostle, which bowed Oct. 12. Her credits also include the forthcoming series The Truth About the Harry Quebert Affair, which is set to air in 2019 on Epix, and the Facebook Watch series Junior. She is repped by CAA, Anonymous Content and Hansen Jacobson.

Plummer starred in Ridley Scott's All the Money in the World as John Paul Getty III and was a regular on the Netflix drama Granite Flats. He began his career in David Chase's feature Not Fade Away and had a recurring part on HBO's Boardwalk Empire. Plummer is repped by CAA, Luber Roklin Entertainment, Zoom Talent Management and Peikoff Mahan.

Schwartz and Savage are executive producing Looking for Alaska with Green, Jessica Tuchinsky, Mark Waters and Marty Bowen and Isaac Klausner of Temple Hill.