In a ruined and toxic future, thousands live in a giant silo deep underground. After its sheriff breaks a cardinal rule and residents die mysteriously, engineer Juliette starts to uncover shocking secrets and the truth about the silo.

Starring Rebecca Ferguson, Common, Harriet Walter, Chinaza Uche, Avi Nash, Rick Gomez, Tim Robbins, Shane McRae, Billy Postlethwaite, Remmie Milner