Clarke returns to Camp Jaha with devastating news. Finn struggles with the aftermath of his actions. Abby gathers information from an unlikely source and prepares for a fight.
Clarke comes up with a bold new plan to stop the Grounders' attack, leading Abby to a desperate decision. Meanwhile, Jasper & Monty question the motives of their new friends.
Tensions run high between Clarke & Finn, while Octavia faces her worst nightmare. As Jasper & Monty discover the truth about Mt. Weather, Wallace is about to be betrayed.
Kane leads a mission to make peace with the Grounders, Jasper agrees to participate in a risky experiment and Lincoln enters a world of pain.
While Kane (HENRY IAN CUSICK) leads a mission to make peace with the Grounders, Lincoln (RICKY WHITTLE) enters a world of pain. And Finn's search for Clarke takes a violent turn.
After being betrayed by someone she thought she could trust, Clarke takes matters into her own hands and proves she’s not going down without a fight.
After being betrayed, Clarke takes matters into her own hands and proves she's not going down without a flight. Bellamy, Finn and Murphy race against time to save a stranger.
Nothing is what it seems. When Clarke (ELIZA TAYLOR) discovers a horrifying project being carried out in Mount Weather's medical ward, she joins forces with an unlikely ally.
Clarke demands answers from President Wallace. Kane interrogates one of The 100, and Abby performs emergency surgery. Meanwhile, Octavia resorts to violence to find Lincoln.
In the season premiere, Clarke is still trapped, while the fate of Bellamy, Finn & Raven is still unknown. Meanwhile, the survivors of the Ark face a dangerous new world.
It's the end of the world as we know it in the first season finale as the conflict on the ground comes to a head and the situation on the Ark comes to a stunning conclusion.
Should they stay or should they go? Those remaining o the Ark must come to terms with the inevitable. Meanwhile, Clarke and Finn find themselves facing a new enemy.
With a low food supply at camp, Clarke and Finn lead a group out to hunt for food and wind up with Finn's life in danger. Meanwhile, Raven makes Bellamy an offer he can't refuse.
Murphy returns to camp claiming to have been held captive and tortured by the Grounders, and Clarke and Bellamy have very different opinions on how to handle his return.
All hell breaks loose when Clarke and Finn attempt to broker peace with the Grounders. And tragedy strikes during the Unity Day celebration on the Ark.
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