The first trailer for Silo season 2 has revealed the survival of Rebecca Ferguson’s Juliette. While the fact that Ferguson’s returning to the series should surprise no one, considering she’s the star of the show, for those folks who haven’t yet watched the first season, you’re in store for one of TV’s most underrated sci-fi series.

Silo is centered on the story of the last surviving people on Earth, ten thousand, give or take, who must live a mile below the surface in the titular structure because the planet has become lethally toxic. What happened to the planet and why these people, in this Silo, carried on was one of season one’s enduring mysteries. Ferguson’s Juliette, a brilliant engineer tasked with keeping the energy-producing drill at the deepest level of the Silo functioning, was ensnared in the mystery after her boyfriend was murdered and she was deputized by the former sheriff (David Oyelowo) for reasons she slowly uncovered toward the season’s climax. The finale ended with Juliette sent into the deadly environment above as punishment for her sleuthing, a fate known as “cleaning,” where, presumably, every other person sentenced as such died.

The season two trailer reveals that Juliette has not dropped dead as previous cleaners had, but the world is as destroyed as the Silo’s powers that be had sworn it was. The revelation in the final shot of season one was that Juliette’s Silo is but one of many, meaning there are thousands upon thousands of other people sequestered in their own claustrophobic worlds, walking distance from where Juliette has spent her entire life, living in their own sunken societies. Juliette’s sacrifice begins to stir the residents of her own Silo into open rebellion as she voyages into new spaces and meets new faces, still dead-set on uncovering the truth.

Ferguson is joined by season one alums Tim Robbins, Common, Harriet Walter, Chinaza Uche, Avi Nash, Alexandria Riley, Shane McRae, Remmie Milner, Clare Perkins, Billy Postlethwaite, Rick Gomez, Caitlin Zoz, Tanya Moodie and Iain Glen. Steven Zahn joins the cast in season two.

Check out the trailer below. Silo season 2 streams on Apple TV+ on November 15.