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.
13 episodes in this season
E1
43m
Clarke and her friends struggle with how to proceed after the fate of the world is revealed.
E2
42m
The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will live and die.
E3
41m
Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.
E4
42m
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.
E5
40m
Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her people.
E6
42m
Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby through enemy territories.
E7
42m
Clarke's arrival on the island quickly takes a turn for the worse. Meanwhile, Bellamy tries to avoid further tragedy in Arkadia.
E8
42m
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.
E9
42m
Jasper and Bellamy go on a quest. Meanwhile, Clarke struggles to keep the peace after word of Jaha's discovery spreads.
E10
42m
Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.
E11
42m
Clarke faces the consequences of her fateful choice.
E12
42m
Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.
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