One day after signing on to star in Marti Noxon‘s dark comedy “To the Bone,” Lily Collins has landed one of the lead roles alongside Jake Gyllenhaal in Netflix’s “Okja,” a monster movie from “Snowpiercer” director Bong Joon-ho, TheWrap has exclusively learned.

Tilda Swinton and Kelly Macdonald are slated to co-star in the film, which will be co-produced by Netflix, Lewis Pictures and Brad Pitt‘s company Plan B Entertainment. Bill Nighy has fallen out of the project, according to insiders, while Paul Dano‘s involvement remains up in the air and will ultimately depend on his schedule.

Netflix did not respond to multiple requests for comment regarding “Okja,” while Dano’s representatives did not respond either.

While plot details remain vague, director Bong has said the title refers to a bulky animal with a mild and kind spirit who strikes up a warm friendship with a young Korean girl. Together, they set out on a bizarre journey through a crazy world.

Collins will play an anarchist named Red who’s the only female member of the higher-ranked ALF members.

“Okja” is one of the first Asian films to be backed by Netflix, which is in the process of expanding throughout the continent, including South Korea. Production is slated to start in the coming months in both Korea and the U.S., and the film could receive a theatrical release in the first half of 2017.

While “Okja” will require a larger budget than “Snowpiercer,” which was made on a reported budget of $40 million, director Bong’s arrangement with Netflix gives him complete creative freedom. The South Korean filmmaker’s previous movies include the serial killer procedural “Memories of Murder,” the crime drama “Mother” and the critically acclaimed monster movie “The Host.”

Best known for her starring roles in “Mirror Mirror” and “The Mortal Instruments: City of Bones,” Collins will soon be seen opposite Alden Ehrenreich in Warren Beatty‘s untitled Howard Hughes movie. She’s also set to star alongside Matt Bomer in Amazon’s drama pilot “The Last Tycoon,” based on F. Scott Fitzgerald‘s unfinished final novel.

Collins is represented by CAA, LBI Entertainment and Sloane, Offer, Weber & Dern.

EXCLUSIVE: Lily Collins has been set to star in To the Bone, the feature directorial debut of TV writer Marti Noxon. Noxon also wrote the dark comedy, which is inspired by her own experiences with anorexia. Principal photography kicks off at month’s end in Los Angeles.

Julie Lynn and Bonnie Curtis of Mockingbird Pictures (Rodrigo Garcia’s Last Days in the Desert and Albert Nobbs) are producing with Karina Miller, who also is financing through Sparkhouse Media, the newly launched production and finance company she heads with husband Talal AlAbbar. To the Bone is that outfit’s first project on a slate aiming to produce three to five films a year with budgets up to $30M.

Collins, whose credits include the Snow White tale Mirror Mirror and The Mortal Instruments: City of Bones, is next up on the big screen in the untitled Warren Beatty movie. She also recently landed the young female lead opposite Matt Bomer in The Last Tycoon, Amazon’s drama pilot based on F. Scott Fitzgerald’s final unfinished novel.

“Lily is a rare bird. She’s got a depth of feeling and heart that immediately won me over,” said Noxon, who co-created Lifetime’s UnReal and created Girlfriends’ Guide to Divorce at Bravo. “I feel blessed to be working with a young woman with such talent, beauty and brains.”

Said Collins: “I’m incredibly honored to be part of such a powerful story of love, self-doubt, and the courage it takes to fight for survival. I believe this film has the potential to shine a light on something that’s becoming more prevalent within our society every day and let those suffering know they’re not alone.”

Noxon, whose TV credits also include Buffy the Vampire Slayer and Mad Men, on the film side wrote I Am Number Four and Fright Night and recently adapted the Gillian Flynn bestseller Sharp Objects with Amy Adams attached.

Collins is repped by CAA, LBI Entertainment and Sloane Offer. Noxon is repped by WME and Hansen Jacobson.