Ninety-seven years ago, nuclear Armageddon decimated planet Earth, destroying civilization. The only survivors were the 400 inhabitants of 12 international space stations that were in orbit at the time. Three generations have been born in space, the survivors now number 4,000, and resources are running out on their dying "Ark" - the 12 stations now linked together and repurposed to keep the survivors alive. Draconian measures including capital punishment and population control are the order of the day, as the leaders of the Ark take ruthless steps to ensure their future, including secretly exiling a group of 100 juvenile prisoners to the Earth's surface to test whether it's habitable.
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The Last War 07x16
After all the fighting and loss, Clarke and her friends have reached the final battle. But is humanity worthy of something greater?
The Dying of the Light 07x15
Clarke and Octavia mount a desperate rescue mission as the Disciples close in on what they want.
A Sort of Homecoming 07x14
Clarke and her friends reckon with all that has happened only to find an unexpected threat looming.
Blood Giant 07x13
The red sun derails Clarke's plans.
The Stranger 07x12
It's a new day in Sanctum. Clarke, Octavia, Raven and Echo struggle with a new foe.
Where in the universe is Bellamy Blake?
A Little Sacrifice 07x10
Sheidheda makes his move. Meanwhile, a Disciple goes rogue.
The Flock 07x09
Murphy and Indra must defuse a tense situation. Meanwhile, old friends make new allegiances.
Clarke confronts a new adversary. A surprising connection takes us back to the past and the nuclear apocalypse that destroyed the Earth.
The Queen's Gambit 07x07
Emori tries to heal Sanctum's old familial wounds while Echo, Octavia and Diyoza struggle with new ones.
Clarke and her friends find themselves on a planet that is not what it seems.