'The Walking Dead's' Steven Yeun Boards Bong Joon-ho's 'Okja'

Steven Yeun and Lily Collins have joined Tilda Swinton, Jake Gyllenhaal and Paul Dano in "Okja," the new sci-fi film from "Snowpiercer" director Bong Joon-ho.

The news arrives with Netflix's announcement of the start of principal photography in Seoul, South Korea. Set for release in English and Korean, the "Okja" will also be shot in Canada and the United States.

Other additions to the cast include Devon Bostick (“The 100”), Byun Heebong ("The Host"), Shirley Henderson ("Anna Karenina"), Daniel Henshall ("The Babadook"), Yoon Je Moon ("Mother") and Choi Wooshik ("Set Me Free").

Written by Bong and Jon Ronson ("Frank"), the film follows a young girl (Seohyun An) who must risk everything to prevent a powerful multinational company from kidnapping her best friend, a gigantic, genetically engineered pig named Okja.

Swinton, who starred opposite Chris Evans in "Snowpiercer," plays the head of the corporation. Gyllenhaal is a zoologist, while Dano portrays an animal activist determined to expose the corporation’s activity.

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