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.
Episodes
1. Who Are You?
Jul 2, 2026 56m 7.0New mayor Juliette can't remember anything from her time outside—or her past.
2. It's All Good
Jul 9, 2026 51m 6.7Billings investigates a disappearance. Daniel Keene has a run-in with a reporter.
3. A Dark Web
Jul 16, 2026 49m 6.7Juliette takes control of her recovery process. Helen suffers consequences of her investigation.
4. Whatever You Do, Don't Go Home
Jul 23, 2026 48m 6.9The race to evade Camille leads Juliette to a shocking discovery. Daniel seeks help from a friend.
5. Memory
Jul 30, 2026 52m 7.2The events following Juliette's return come to light—and unexpected allies are made.
6. The Drive
Aug 6, 2026 55m 6.8Billings and Hank stumble on a new mystery. Daniel and Helen receive a surprising proposition.
7. Radio
Aug 13, 2026 55m 7.3Juliette sends Lukas and Kennedy on a mission, as a desperate Camille threatens Robert to tell the truth.
8. Gray Goo
Aug 20, 2026 56m 7.5Knox's father Gus comes clean about a secret. Charlotte makes a life-changing decision.
9. Farewell
Aug 27, 2026 1h 2m 8.2The entire silo is stunned by an announcement from Camille. Daniel and Helen attend a special event.
10. Troy
Sep 3, 2026 1h 1m 8.7A leader wakes to a new world.