Complete story — includes the ending
Clarke struggles to keep the peace in Polis after word of Jaha's discovery of the shelter spreads, which makes other clans, including Roan's and Indra's, want a part of the shelter for their own people. To secure the peace, Clarke agrees to become the new Commander, but the revelation of where her Nightblood comes from causes Roan to decide to hold a final conclave instead to determine which clan will control the bunker. At Arkadia, Jasper and Bellamy get into an argument when Jasper and other like-minded youth of the original 100 want to stay behind to celebrate the end of the world, while Bellamy wants to lead the remainder of Arkadia's 400-plus population to the shelter before the death wave arrives in less than six days and wipes out all life. Raven decides to stay behind at the lab as she is haunted by Becca's hallucination urging her to continue the space rocket repairs as Murphy and Emori decide to head out to the shelter. Elsewhere, Octavia struggles to adjust to living at Ilian's farm until a brutal and lethal encounter with three hostile grounders make her realize that she cannot run away from her past.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of The 100 episodes. HTML formatting and reference markers removed. · Content license