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.

Sheriff Becker's plans for the future are thrown off course after his wife meets a hacker with information about the silo.

Freedom Day

Juliette, an engineer, pieces together what might have led to a co-worker's mysterious death.

Holston's Pick

In her hunt for a new sheriff, Mayor Jahns clashes with Bernard. Juliette strikes a deal to keep the generator running.

Machines

Juliette tries gaining the trust of Deputy Marnes as they work to uncover the truth about recent tragedies.

Truth

Sims appoints Billings as chief deputy to keep tabs on Juliette, whose efforts to solve two murders lead to a showdown.

The Janitor's Boy

During her investigation, Juliette uncovers disturbing secrets about someone she thought she knew.

The Relic

Bernard seeks Juliette's cooperation as he grows increasingly concerned about the silo's security. Juliette asks her father for a favor.

The Flamekeepers

New information causes Juliette to see her family's past differently—and she finally gains access to the silo's biggest secrets.

Hanna

Racked with guilt, Billings sets off on a personal mission, only to discover a mind-blowing clue from Juliette.

The Getaway

Juliette's fate seems sealed when certain truths finally come to light.

Outside

Juliette finds sanctuary in a silo long ago destroyed by war, thinking she's alone.

The Engineer

In Silo 18, shock and unrest take hold in the wake of Juliette doing what no one's done before.

Order

Bernard turns to Judge Meadows for help. Billings begins to wonder if he's being lied to. Juliette finally meets the man in the vault.

Solo

Juliette sets out on a dangerous quest to retrieve a suit so she can return home and save her silo. Mechanical plans a meeting with Judge Meadows.

The Harmonium

Sims finds himself with a new position. Juliette learns Solo isn't being honest. Bernard and Lukas make an important discovery.

Descent

Bernard enacts a plan to root out Knox, Shirley, and Walker. Billings takes a stand. Solo saves Juliette's life and wants something in return.

Barricades

Lukas is assigned a mission. Mechanical sends a powerful message. Juliette embarks on a perilous descent—and confronts a new danger.

The Dive

Juliette discovers something's happened to Solo. Bernard makes an offer to Walker. Lukas meets with Salvador Quinn's descendants.

The Book of Quinn

Billings' faith is shaken. Lukas heads to the down deep. Knox identifies the traitor. Juliette uncovers the truth about Solo's past.

The Safeguard

The rebels make their move—and so does Juliette.

Into the Fire

New mayor Juliette can’t remember anything from her time outside—or her past.

Who Are You?

Billings investigates a disappearance. Daniel Keene has a run-in with a reporter.

It's All Good

Juliette takes control of her recovery process. Helen suffers consequences of her investigation.

A Dark Web

The race to evade Camille leads Juliette to a shocking discovery. Daniel seeks help from a friend.

Whatever You Do, Don't Go Home

The events following Juliette's return come to light—and unexpected allies are made.

Memory

Billings and Hank stumble on a new mystery. Daniel and Helen receive a surprising proposition.

The Drive

Juliette sends Lukas and Kennedy on a mission, as a desperate Camille threatens Robert to tell the truth.

Radio

Knox's father Gus comes clean about a secret. Charlotte makes a life-changing decision.

Gray Goo

The entire silo is stunned by an announcement from Camille. Daniel and Helen attend a special event.

Silo

Episode · Musim 1