Every season of The 100 ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of The 100!

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.

Pilot

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.

Earth Skills

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.

Earth Kills

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.

Murphy's Law

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.

Twilight's Last Gleaming

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.

His Sister's Keeper

While Bellamy tortures the Grounder, Raven and Clarke make contact with the Ark and ask Abby to help them save Finn. On the Ark, Kane deals with his guilt, and Jaha surprises the council with a shocking revelation.

Contents Under Pressure

Shumway secretly orders one of the 100 to kill Bellamy. Meanwhile, hallucinogenic nuts provide Octavia with an opportunity to help the Grounder escape the camp, and Bellamy and Clarke investigate a nearby underground depot, where they find military weapons.

Day Trip

Finn arranges a meeting with Clarke and the leader of the Grounders in order to bring peace, however a sceptical Clarke warns Bellamy, who along with Jasper and Raven follow them to the meeting with weapons. On the Ark, Diana takes over the exodus ship.

Unity Day

Murphy returns to the camp carrying a horrific virus created by the Grounders to weaken the camp. After learning the Grounders plan to attack the next day, Bellamy, Finn and Raven come up with a plan to delay them.

I Am Become Death

Clarke and Finn are captured by Anya, who forces them to save the life of a victim of the explosion. Meanwhile, Raven deals with her split from Finn, and Kane fights to save the Ark and it's survivors.

The Calm

Clarke and Finn come face to face with a new enemy after Lincoln rescues them from Anya, while Bellamy, Raven, Octavia and Jasper deal with a vengeful Murphy. On the Ark, Jaha makes a plan to try and get to Earth.

We Are Grounders (1)

As the remaining members of the 100 face off against the Grounders, Jaha makes a noble sacrifice to ensure the Ark makes it to Earth.

We Are Grounders (2)

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.

The 48

Clarke wants answers from the President. Abby performs emergency surgery. Octavia will do anything to find Lincoln.

Inclement Weather

After discovering a horrifying project in Mount Weather's medical ward, Clarke joins forces with an unexpected ally.

Reapercussions

Clarke ends up being betrayed by somebody that she trusted. Bellamy, Finn and Murphy attempt to save a stranger.

Many Happy Returns

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.

Human Trials

Tensions are running high between Clarke and Finn. Raven finds out that Mount Weather is interfering with their communication systems.

Fog of War

Bellamy is able to get Clarke to agree to accompany him to the drop ship. Dr. Tsing is in charge of a deadly experiment.

Long Into an Abyss

Clarke comes back to Camp Jaha with some shocking news. Finn has to face the consequences of his actions.

Spacewalker

Lexa and Clarke manage to make a deal.The newly created alliance is under threat. Monty comes up with a plan.

Remember Me

Lives are left in danger following the arrival of a new threat. Lincoln and Bellamy decide to break into Mount Weather.

Survival of the Fittest

Lincoln and Bellamy's efforts to get into Mount Weather has some brutal consequences.

Coup de Grâce

Clarke is faced with a difficult choice and Raven helps Bellamy navigate Mount Weather as Dr. Tsing begins to harvest the 47, while Jaha and Murphy encounter a stranger on their journey to the City of Light.

Rubicon

Clarke begins to question Lexa's leadership decisions and Indra continues to push Octavia. Meanwhile, at Mount Weather, Jasper steps up into the role of leader, and Cage throws Maya into a life threatening situation.

Resurrection

Lexa and Clarke get into a heated discussion during battle preparations; Bellamy races against time.

Bodyguard of Lies

Wick and Raven are faced with a setback. Maya and Jasper witness a terrible act.

Blood Must Have Blood (1)

Jaha makes a surprising move. Clarke gets help from an unexpected source. Lincoln seeks revenge.

Blood Must Have Blood (2)

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.

Wanheda (1)

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.

Wanheda (2)

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

Ye Who Enter Here

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

Watch the Thrones

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

Hakeldama

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

Bitter Harvest

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’s past.

Thirteen

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 walls of Arkadia. Lastly, Raven has a plan and reaches out to Jasper for help.

Terms and Conditions

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.

Stealing Fire

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 situation, and Jasper rushes to save one of his own.

Fallen

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 decision.

Nevermore

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

Demons

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.

Join or Die

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

Red Sky at Morning

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

Perverse Instantiation (1)

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

Perverse Instantiation (2)

Clarke and her friends struggle with how to proceed after the fate of the world is revealed.

Echoes

The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will live and die.

Heavy Lies the Crown

Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.

The Four Horsemen

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.

A Lie Guarded

Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her people.

The Tinder Box

Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby through enemy territories.

We Will Rise

Clarke's arrival on the island quickly takes a turn for the worse. Meanwhile, Bellamy tries to avoid further tragedy in Arkadia.

Gimme Shelter

After a disappointing discovery, Clarke and Abby question how far they're willing to go. Meanwhile, Jaha finds a lead to the mysterious Second Dawn.

God Complex

Jasper and Bellamy go on a quest. Meanwhile, Clarke struggles to keep the peace after word of Jaha's discovery spreads.

Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.

Die All, Die Merrily

Clarke faces the consequences of her fateful choice.

The Other Side

Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.

The Chosen

It's a race against the end of the world as Praimfaya arrives forcing our heroes to make impossible decisions to ensure their survival.

Praimfaya

Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long-awaited beacon of hope.

Eden

Octavia is forced to take guidance from an unlikely ally when the future of the bunker and all those inside it is jeopardized.

Red Queen

Bellamy leads the charge investigating a potential way home. Meanwhile, Clarke and Madi deal with the new, uncertain threat to their home.

Sleeping Giants

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.

Pandora's Box

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.

Shifting Sands

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.

Exit Wounds

Clarke and Bellamy make a startling discovery about Wonkru’s battle plans as Echo risks her friendship with Raven to complete her mission.

Acceptable Losses

Clarke’s determination to protect Madi puts Bellamy  in an impossible position.

How We Get to Peace

The growing fractures in Wonkru threaten to explode once and for all. Meanwhile, in Shadow Valley, Murphy starts a fire, unleashing catastrophic results.

Sic Semper Tyrannis

Monty strives to show Wonkru an alternative to war, and to the valley itself. Meanwhile, Abby’s health continues to deteriorate, along with McCreary’s patience.

The Warriors Will

As Clarke races to save Abby, she learns more about the trials and tribulations Wonkru faced in the bunker, and the impossible decisions they were forced to make in the dark year.

The Dark Year

Octavia leads her people into war. While behind enemy lines, our heroes must overcome their differences to save Wonkru from extinction.

Damocles (1)

Clarke and her friends must risk everything to fight one last battle for survival, only to glimpse an even darker threat to the last living valley on Earth.

Damocles (2)

Still reeling after receiving Monty’s message, a small group goes down to explore the mysterious new planet. Back on the Mothership, several members of Wonkru face the consequences of their decisions.

Sanctum

The team on the ground flights to survive the threat they face on the new planet. Meanwhile, Raven must join forces with an unlikely ally to save everyone on board the Mothership.

Red Sun Rising

Clarke tries to win over the leaders of Sanctum in order to let her people stay. Meanwhile, Bellamy, Echo and Octavia discover a new threat while on a mission to retrieve the transport ship.

The Children of Gabriel

Clarke embraces the traditions of Sanctum and tries to make amends for her past actions.

The Face Behind the Glass

Jordan investigates Sanctum. Meanwhile, Octavia and Diyoza discover the threats of the new planet firsthand. Lastly, Bellamy and Clarke butt heads.

The Gospel of Josephine

Diyoza learns more about the mysterious Children of Gabriel while Abby continues searching for a way to save Kane.

Memento Mori

Nevermind

Octavia and Diyoza make their way to the mysterious anomaly in search of the Old Man. Meanwhile, Murphy  has an offer for Emori.

The Old Man and the Anomaly

Bellamy must venture into enemy territory with an unlikely companion. Meanwhile, Octavia is forced to confront her past.

What You Take With You

Russell seeks justice. Meanwhile, Gabriel must make a difficult choice. Lastly, the Blake siblings reunite.

Matryoshka

Bellamy and Octavia must work together to save their friends. Echo is forced to face her past.

Ashes to Ashes

A special Naming Day changes everything in Sanctum. Gabriel comes face to face with an old friend.

Adjustment Protocol

Sanctum becomes a battleground between the devout and the non-believers. The mystery of the anomaly deepens.

The Blood of Sanctum

Clarke  and her friends attempt to rebuild Sanctum as a new threat rises in the woods.

From the Ashes

Echo and Gabriel learn more about Hope and her mysterious past.

The Garden

Raven faces an unexpected threat. Clarke must keep the peace among opposing factions in Sanctum.

False Gods

Mysterious outsiders arrive with news of Clarke's missing people.

Hesperides

Octavia gets to know a whole new world. Meanwhile, Murphy and Emori play make believe.

Welcome to Bardo

Clarke and her friends find themselves on a planet that is not what it seems.

Nakara

Emori tries to heal Sanctum's old familial wounds while Echo, Octavia and Diyoza struggle with new ones.

The Queen's Gambit

Clarke confronts a new adversary. A surprising connection takes us back to the past and to the nuclear apocalypse that destroyed the Earth.

Anaconda

Murphy and Indra must defuse a tense situation. Old friends make new allegiances.

The Flock

Sheidheda makes his move. A Disciple goes rogue.

A Little Sacrifice

Etherea

It's a new day in Sanctum. Clarke, Octavia, Raven and Echo struggle with a new foe.

The Stranger

Blood Giant

Clarke and her friends reckon with all that has happened only to find an unexpected threat looming.

A Sort of Homecoming

Clarke and Octavia mount a desperate rescue mission as the Disciples close in on what they want.

The Dying of the Light

After all the fighting and loss, Clarke and her friends have reached the final battle. But is humanity worthy of something greater?

The Last War

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.

The Best Seasons of The 100

The Best Seasons of The 100

Season 5

Season 2

Season 6

Season 4

Season 1

Season 3

Season 7