Complete story — includes the ending
In the midst of a hurricane on the ground, Finn is near death from a poisoned stab wound. Bellamy, having captured the grounder who stabbed Finn, tortures him for the antidote but he does not speak. Raven successfully connects with the Ark; Abby assists Clarke with treating Finn. Octavia convinces the grounder to reveal the antidote by poisoning herself with the same blade. On the Ark, Abby is released due to the unexpected support of Kane, but is removed from the Council as punishment for her actions. Replacing her is the former chancellor, Diana Sydney, whose intentions are questionable. After learning that Earth is habitable, the Ark begins preparations for Project Exodus: their re-colonization of Earth. However, their dropships can only carry about 25% of the Ark's population. In addition, residual tension from the culling causes mistrust in the Council. Clarke finally confronts her mother who insists that she only intended to have Jaha talk Clarke's father out of his plan, not execute him.
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