Echo successfully infiltrates Diyoza's camp. Clarke watches the passengers de-board the ship, where they roam the area and almost kill Madi, before Clarke jumps in. . Pike then frees himself, his supporters, and Bellamy, and they leave to finish what they started. When a grounder thief breaks into Becca's mansion and is captured, Emori identifies him as her nemesis Baylis.
For the third season, see. She finds a room of dead people, then a young Nightblood girl who runs from her. After heading to the crash site, they discover an injured Raven and Murphy. Clarke secretly plots an escape. She gives the brace he made a try.
Meanwhile, Murphy is released from his bunker and finds Jaha and A. He has trouble saying his name, so he calls him Theelo. Raven successfully connects with The Ark; Abby assists Clarke with treating Finn. Later, only three warriors are left; Octavia teams up with Roan to take on Luna, but a storm of black rain arrives which puts both of them at a disadvantage against Luna, who is a Nightblood. For the fourth season, see.
However, their drop ships can only carry about 25% of The Ark's population. Clarke and Bellamy are the first to awake and are greeted by a 27-year old man named Jordan, Harper and Monty's son, who informs them 125 years have passed. Clarke fails to convince Bellamy, but instead induces Lexa to end the cycle of violence in hopes of peace. They use the worms to kill Cooper, and attempt to make her death look like an accident. Meanwhile, Bellamy, his girlfriend Gina, Octavia, and Raven arrive at Mount Weather with supplies for the Farm Station refugees. Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long awaited beacon of hope.
Bellamy reaches her pod first and throws away her radio. On their way out of the woods, Clarke and Anya arrive at Camp Jaha. Pike's name is then suggested for inclusion on the ballot for the upcoming Chancellor vote. Jasper, mentioning Finn, prompts a realisation that Raven has no recollection of him at all, and they leave the device where it is. They have sex, and she decides to go with him back to his family's abandoned farm. Octavia wakes up and reports Bellamy's betrayal, but Indra secures the room and will not let her leave. He and an interned Lincoln stage an argument in lock-up, creating a distraction for Kane to capture Pike.
Although Luna kills Roan, Octavia eventually defeats Luna and becomes the winning champion. Finn runs to the bunker in frustration, Clarke follows, and they have sex. As Jaha reflects on his future plans, Pike decides to sentence Kane to death for treason, forcing Bellamy and Monty to re-evaluate which side they are truly on in the ever-escalating tensions towards war. Also, Monty and Jasper discover and expose Clarke's list of 100 names forcing Jaha to resolve the conflict. Meanwhile, Cage visits his father, desperately hoping he will tell him a way to stop the incoming attack. Equipped with vital-monitoring wristbands and instructions to proceed directly to Mount Weather, upon landing, 100 juvenile delinquents are sent to the surface to test its habitability. Meanwhile, Jaha and Murphy arrive at an island where they separate.
Later, Murphy smothers Connor as revenge for his part in Murphy's hanging. In Arkadia, Jaha overhears Niylah use a phrase associated with the cult who built the shelter, and believes that the shelter he found was a decoy. Monty shows Octavia that the Hydrofarm is working again and they could grow crops elsewhere than the Shallow Valley. When Otan returns he appears to be brainwashed, and Murphy throws the pack into the water. To make Clarke talk, she orders Madi shot on sight.
The Mountain Men find them and are in pursuit. Raven, Emori, Murphy and Echo head out to scout ways into the valley Octavia's army will arrive in 5 days. They decide to carry out Raven's original plan to free herself from A. However, after hearing that humanity is facing extinction within six months, Jasper seemed to lose his desire to kill himself. She sends Jaha to Camp Jaha with a message; leave within two days, or die.
Meanwhile, Clarke and Raven travel to Finn's bunker in hopes of finding a radio transmitter with which to contact The Ark, and Raven discovers Finn's involvement with Clarke. Six years later, Octavia and her advisers watch over Wonkru warriors fighting to the death. Conflicts with the Ice Nation, in whose territory they landed, have reduced their numbers to 63. The three talk, and Clarke berates Wells for his apparent part in her father's execution believing he told his father of Clarke's father's intent to commit treason. Now, coming to terms with his actions, he speaks to Jaha and is pardoned in exchange for information about the assassination attempt. Dax, whom Commander Shumway is coercing to kill Bellamy, follows them.