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Season guide

The 100: Season 3

16 episodes Premiered Jan 21, 2016 Updated Sep 22, 2026

The 100 Season 3 continues the overarching saga across 16 episodes. The series follows descendants of post-apocalyptic survivors from a space habitat, the Ark, who return to Earth nearly a century after a nuclear apocalypse. Created by Jason Rothenberg, the American post-apocalyptic sci-fi television series features cast members including Eliza Taylor, Bob Morley, Marie Avgeropoulos, and Lindsey Morgan. The productio

Previously on The 100

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • The series is set nearly a century after a nuclear apocalypse destroyed Earth.
  • The main characters are descendants of post-apocalyptic survivors who lived on a space habitat known as the Ark.
  • The human population returns from space to attempt survival on the surface of Earth.
  • The television series is created by Jason Rothenberg and features characters portrayed by actors such as Eliza Taylor, Bob Morley, Marie Avgeropoulos, and Lindsey Morgan.

Season overview

The 100 Season 3 continues the overarching saga across 16 episodes. The series follows descendants of post-apocalyptic survivors from a space habitat, the Ark, who return to Earth nearly a century after a nuclear apocalypse. Created by Jason Rothenberg, the American post-apocalyptic sci-fi television series features cast members including Eliza Taylor, Bob Morley, Marie Avgeropoulos, and Lindsey Morgan. The production is associated with Alloy Entertainment, CBS Television Studios, and Warner Bros., and was broadcast on the television network The CW between 2014 and 2020. The narrative unfolds within a world categorized under genres such as sci-fi and fantasy, action and adventure, drama, and crime, exploring the complexities of survival where survival is not who you are, but who you become.

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Season 3 Episodes

Episode Guide

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Season 3 Progress Shield

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Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

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75%
Mytharc (4): Crucial lore & season climaxes
Core (12): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

Wanheda (1)

Jan 21, 2016

Three months have passed since the tragedy at Mount Weather and our heroes learn that a bounty has been put on Clarke’s head. Unbeknownst to Clarke, a team led by Bellamy and Kane

S3·E2 Core

Wanheda (2)

Jan 28, 2016

Bellamy and Kane risk life and limb to rescue Clarke. In an attempt to avoid worrying about her daughter, Abby focuses on whether to open Mount Weather as a medical facility. Meanw

S3·E3 Core

Ye Who Enter Here

Feb 4, 2016

Clarke wrestles with a decision. Bellamy learns that something isn't what it seems. Meanwhile, Murphy plots to betray his former Chancellor.

S3·E4 Mytharc

Watch the Thrones

Feb 11, 2016

Clarke discovers the mastermind behind a devious plan. Kane struggles to keep the peace. Meanwhile, Jasper’s grief drives him to reckless behavior.

S3·E5 Core

Hakeldama

Feb 18, 2016

Pike's twisted crusade threatens Clarke's attempts for peace. Raven becomes a target, while Murphy tries to conspire against Jaha.

S3·E6 Core

Bitter Harvest

Feb 25, 2016

Clarke is torn between vengeance and mercy. Meanwhile, Kane and Octavia work together to avert a disaster, and Abby continues to worry about Raven.

S3·E7 Core

Thirteen

Mar 3, 2016

Lexa tries to maintain peace and order within the clans, and Clarke uncovers a strange and game-changing truth. Meanwhile, a flashback takes us into the darker chapter of humanity’

S3·E8 Core

Terms and Conditions

Mar 10, 2016

Kane is searching for a peaceful way to handle things but soon realizes he may be forced to resort to drastic measures. Meanwhile, Pike suspects that there may be a leak within the

S3·E9 Core

Stealing Fire

Mar 31, 2016

Clarke discovers a shocking truth, and Octavia is forced to make a decision that could have devastating consequences. Meanwhile, Kane and Abby share a moment.

S3·E10 Core

Fallen

Apr 7, 2016

Jaha employs a terrifying new method to convince Abby to join his cause, Kane is on a mission, and Bellamy is hit with a hard truth. Meanwhile, Monty finds himself in a precarious

S3·E11 Core

Nevermore

Apr 14, 2016

Alie forces Raven’s dark side to come out, and Jasper’s anger continues to grow. Meanwhile, Octavia wrestles with her place in the world, and Monty is forced to make a split second

S3·E12 Core

Demons

Apr 21, 2016

Jaha returns to Polis, and Murphy has a surprise encounter. Meanwhile, Octavia uncovers a clue.

S3·E13 Core

Join or Die

Apr 28, 2016

Clarke is on a mission that could change everything. Meanwhile, Murphy gains insight that might prove useful in ensuring his survival. Lastly, Kane reaches a breaking point.

S3·E14 Core

Red Sky at Morning

May 5, 2016

Clarke, Bellamy, Octavia and Jasper hit a tragic roadblock. Meanwhile, Raven and Monty make an important discovery.

S3·E15 Mytharc

Perverse Instantiation (1)

May 12, 2016

Clarke finds hope in the most unlikely place. Meanwhile, Alie’s master plan comes together.

S3·E16 Mytharc

Perverse Instantiation (2)

May 19, 2016

Our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.