Season 3
10 episodes · premiered Jul 2, 2026
Season three reveals an origin story set centuries earlier, while continuing the saga of a dystopian society of 10,000 people living underground under mysterious circumstances. In the present, Juliette Nichols survives her forced "cleaning" but returns with memory loss as the silo recovers from rebellion and faces a dangerous new threat. Meanwhile, in the "Before Times," journalist Helen Drew and Congressman Daniel Keene uncover a conspiracy that pulls them into a chain of events with catastrophic, irreversible consequences.
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E1 Who Are You?
New mayor Juliette can't remember anything from her time outside—or her past.
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E2 It's All Good
Billings investigates a disappearance. Daniel Keene has a run-in with a reporter.
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E3 A Dark Web
Juliette takes control of her recovery process. Helen suffers consequences of her investigation.
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E4 Whatever You Do, Don't Go Home
The race to evade Camille leads Juliette to a shocking discovery. Daniel seeks help from a friend.
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E5 Memory
The events following Juliette's return come to light—and unexpected allies are made.
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E6 The Drive
Billings and Hank stumble on a new mystery. Daniel and Helen receive a surprising proposition.
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E7 Radio
Juliette sends Lukas and Kennedy on a mission, as a desperate Camille threatens Robert to tell the truth.
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E8 Gray Goo
Knox's father Gus comes clean about a secret. Charlotte makes a life-changing decision.
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E9 Farewell
The entire silo is stunned by an announcement from Camille. Daniel and Helen attend a special event.
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E10 Troy
A leader wakes to a new world.