EXCLUSIVE: Lily Collins has been set to star in survival thriller Titan, written and directed by Kill Your Darlings scribe Austin Bunn. Christine Vachon is producing with David Hinojosa for Killer Films. XYZ Films is exec producing and will launch international sales at the upcoming Cannes Market. CAA and UTA are handling domestic.

Titan tells the story of Emma (Collins), a strong-willed young musician on a quest to understand the life of her environmental activist older sister, who was killed years before in a tragic fall. Emma seeks out Justin, a former member of the movement, who reluctantly agrees to take her to the same remote redwood grove that claimed her sister. Emma soon finds herself in serious peril, forced to face off with Mother Nature in a relentless fight for survival.

Collins starred in last year’s To The Bone and has Extremely Wicked, Shockingly Evil And Vile and Tolkien on deck. She’s repped by CAA, LBI, Definition Entertainment and Sloan, Offer, Weber and Dern. Bunn is repped by UTA, Anonymous Content and attorney Jeff Wertheimer.

In Cannes, XYZ Films will continue sales on Joe Penna’s Official Selection title Arctic starring Mads Mikkelsen. Its Mandy, starring Nicholas Cage and directed by Panos Cosmatos, will play in the Directors’ Fortnight section.