Based on the books by Kass Morgan, this show takes place 100 years in the future, when the Earth has been abandoned due to radioactivity. The last surviving humans live on an ark orbiting the planet — but the ark won't last forever. So the repressive regime picks 100 expendable juvenile delinquents to send down to Earth to see if the planet is still habitable.
Where to Watch The 100
Where to stream every episode from all 5 seasons of The 100. Filter these episodes by what's available to watch free or on your streaming services using the tabs above.
Season 1Netflix | Rent or Buy
S01 E01Mar 20, 2014
Pilot Mar 20, 2014 97 years after a nuclear war, human kind is living in space. 100 juvenile delinquents are sent down to Earth to see if the planet is habitable.
S01 E02Mar 27, 2014
Earth Skills Mar 27, 2014 Discovering that Jasper may still be alive, Clarke, Bellamy, Finn, Wells and Murphy head out to find him. On the Ark, Abby is determined to prove Earth is habitable, and enlists a mechanic to craft an escape pod.
S01 E03Apr 3, 2014
Earth Kills Apr 3, 2014 As a dangerous, acidic fog approaches, Clarke, Finn and Wells set out in search of a seaweed-like plant to make an antibiotic poultice for Jasper's wounds, while a vulnerable young girl follows when Bellamy takes a group out hunting for food.
S01 E04Apr 10, 2014
Murphy's Law Apr 10, 2014 Bellamy, Clarke and Finn try to protect Charlotte when everyone learns she killed Wells. On the Ark, Abby risks getting floated in order to give Raven the chance to launch the escape pod.
S01 E05Apr 17, 2014
Twilight's Last Gleaming Apr 17, 2014 A plan to contact the Ark is put in motion after Raven crash lands on Earth. Meanwhile, Abby exposes Kane's plan to reduce the population of the Ark.
S01 E06Apr 24, 2014
His Sister's Keeper Apr 24, 2014 Bellamy, Finn and Jasper head into Grounder territory to search for Octavia, as flashbacks show the siblings' difficult childhood on the Ark. Meanwhile, Raven finds out about Clarke and Finn.
Season 2Netflix | Rent or Buy
S02 E01Oct 23, 2014
The 48 Oct 23, 2014 Clarke is still on her own in the white room, frantically attempting to make sense of her bizarre surroundings. Lincoln and Octavia's plan is ruined and an enemy returns.
S02 E02Oct 30, 2014
Inclement Weather Oct 30, 2014 Clarke wants answers from the President. Abby performs emergency surgery. Octavia will do anything to find Lincoln.
S02 E03Nov 6, 2014
Reapercussions Nov 6, 2014 After discovering a horrifying project in Mount Weather's medical ward, Clarke joins forces with an unexpected ally.
S02 E04Nov 13, 2014
Many Happy Returns Nov 13, 2014 Clarke ends up being betrayed by somebody that she trusted. Bellamy, Finn and Murphy attempt to save a stranger.
S02 E05Nov 20, 2014
Human Trials Nov 20, 2014 Kane takes part in a mission to make peace with the Grounders. Jasper decides to take part in a risky experiment. Lincoln enters a world of pain and President Dante Wallace issues a warning.
S02 E06Dec 4, 2014
Fog of War Dec 4, 2014 Tensions are running high between Clarke and Finn. Raven finds out that Mount Weather is interfering with their communication systems.
Season 3Netflix | Rent or Buy
S03 E01Jan 22, 2016
Wanheda: Part One Jan 22, 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 journeys deep into Grounder territory to save her. Meanwhile, Murphy finds his way to the mansion and discovers a very different Jaha on a very different mission.
S03 E02Jan 29, 2016
Wanheda: Part Two Jan 29, 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. Meanwhile, Murphy plots to betray his former Chancellor.
S03 E03Feb 5, 2016
Ye Who Enter Here Feb 5, 2016 Clarke wrestles with a decision. Bellamy learns that something isn't what it seems. Meanwhile, Murphy plots to betray his former Chancellor.
S03 E04Feb 12, 2016
Watch the Thrones Feb 12, 2016 Clarke discovers the mastermind behind a devious plan. Kane struggles to keep the peace. Meanwhile, Jasper’s grief drives him to reckless behavior.
S03 E05Feb 19, 2016
Hakeldama Feb 19, 2016 Pike's twisted crusade threatens Clarke's attempts for peace. Raven becomes a target, while Murphy tries to conspire against Jaha.
S03 E06Feb 26, 2016
Bitter Harvest Feb 26, 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.
Season 4Netflix | Rent or Buy
S04 E01Feb 2, 2017
Echoes Feb 2, 2017 Clarke and her friends struggle with how to proceed after the fate of the world is revealed.
S04 E02Feb 9, 2017
Heavy Lies the Crown Feb 9, 2017 The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will live and die.
S04 E03Feb 16, 2017
The Four Horsemen Feb 16, 2017 Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.
S04 E04Feb 23, 2017
A Lie Guarded Feb 23, 2017 Continued struggles with leadership and trust in Arkadia and Polis take violent turns while Abby leads a team to a distant location hoping to find answers.
S04 E05Mar 2, 2017
The Tinder Box Mar 2, 2017 Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her people.
S04 E06Mar 16, 2017
We Will Rise Mar 16, 2017 Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby through enemy territories.
Season 5Netflix | The CW | Rent or Buy
S05 E01Apr 25, 2018
Eden Apr 25, 2018 Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long-awaited beacon of hope.
S05 E02May 2, 2018
Red Queen May 2, 2018 Octavia is forced to take guidance from an unlikely ally when the future of the bunker and all those inside it is jeopardized.
S05 E03May 9, 2018
Sleeping Giants May 9, 2018 Bellamy leads the charge investigating a potential way home. Meanwhile, Clarke and Madi deal with the new, uncertain threat to their home.
S05 E04May 16, 2018
Pandora's Box May 16, 2018 Our Heroes are forced to rely on the help of Shallow Valley's dangerous new inhabitants in order to save some of their own, with surprising results.
S05 E05May 23, 2018
Shifting Sands May 23, 2018 Octavia leads her people towards Shallow Valley against the advice of Clarke and Bellamy. Meanwhile, Kane and Abby adjust to a new set of challenges.
S05 E06Jun 6, 2018
Exit Wounds Jun 6, 2018 Kane's attempt to prove himself useful tests Wonkru's allegiance to Octavia. Madi faces an unexpected threat inside Wonkru, forcing Clarke to make an unlikely ally.