Blake Lively is set to star in a post-apocalyptic thriller titled Dark Days at the Magna Carta. The project, produced by Stranger Things-fame Shawn Levy, has been picked up by Netflix and is being eyed as a potential franchise starter. Levy is backing it through his banner, 21 Laps, along with Lively's production house, B For Effort.

The film is based on a story by up-and-coming writer Michael Paisley, who will be developing the screenplay. Lively will play a woman who has to go to great lengths to save her family when the world is caught in the grip of a catastrophic event. 

Lively, who is known for her appearances in films like The Town and Cafe Society, was recently seen in filmmaker Reed Morando's spy thriller, The Rhythm Section.

Meanwhile, Levy is busy with the prep work of his next directorial, Free Guy, starring Ryan Reynolds.