We do not know why everything outside the silo is as it is. We do not know when it will be safe to go outside. We only know that day is not this day." Take one final deep breath of fresh air as we're about to descend back down into the subterranean world of "Silo" for a new 10-episode season on the Apple TV+ streaming service starting today (Nov.

For those unfamiliar, Silo takes place in underground silos that house and protect the last remaining humans on the planet. Rebecca Ferguson stars as Juliette, an engineer who attempts to seek out answers, including why the silos were really built. Her co-stars Common and Tim Robbins are also back this season, along with new addition Steve Zahn.

Steve Zahn joins the cast this season, while Rebecca Ferguson, Tim Robbins, Common, and more return in Apple TV+'s dystopian drama.