Season 6

Complete listed story — includes the ending

1. Sanctum

Clarke, Bellamy, Echo, Emori, Murphy, Miller, Jackson, and Shaw go down to explore the moon Alpha and determine its survivability. While the group is chased by a swarm of native bugs, Shaw runs into a shield of radiation and dies. The others make it to a seemingly abandoned compound. After Bellamy confronts Clarke over the radio calls, he discovers a children's book depicting the moon's binary solar eclipse causing people to go insane. Just then, Emori stabs Murphy and tries to kill him, having been influenced by the airborne toxins. In space, Abby performs surgery on Kane to save him. She instructs Niylah to get blood from all sleeping Skaikru. Octavia, being woken up with her people, confronts an awoken Kane about his betrayal of Wonkru. Their argument leads to Kane suffering internal bleeding and Abby puts him back into cryo until she can figure out how to save him.

2. Red Sun Rising

In a flashback 236 years ago, humans from Earth found Sanctum on the moon Alpha. A binary solar eclipse occurs, causing the lead scientist to go on a murderous rampage. In the present, the toxins continue to affect Clarke, Bellamy, Echo, Emori, Murphy, Miller, and Jackson. They attempt to chain themselves up to avoid hurting each other, but Clarke, Bellamy, and Murphy end up free. Bellamy ends up trying to kill Clarke and Murphy, but Clarke subdues all three of them with a sleeping gas. A group of the planet's inhabitants steals the group's ship and take control of the mothership. Stuck in the cafeteria, many Wonkru violently attack Octavia for her past actions. Raven wakes Diyoza and they team up with Madi to retake control of the bridge. Afterward, Abby, Diyoza, Raven, Madi, Jordan, Gaia, their prisoner, and a stowaway Octavia arrive on the planet and go to the compound where Raven discovers Shaw is dead. A group of children run up to the crew and think they've come to take them all back home.

3. The Children of Gabriel

When Sanctum residents return after the eclipse, Clarke requests the Earth group be allowed to stay in Sanctum. Their leader, Russell, asks Raven to bring the transport ship inside Sanctum's radiation shield for safety, while he and Clarke discuss the future of the Earth group over dinner. Jordan falls for Delilah, a Sanctum girl who is preparing for her "Naming Day" to become a Prime. He tells her about Clarke's history as Wanheda and how she killed people to protect her own. This causes Russell to deny Clarke's request to stay in Sanctum. At the dropship, Madi, Diyoza and Gaia are ambushed by a group known as the "Children of Gabriel" who steal their weapons and behead Kaylee's dead family bodies as they chant "Death to Primes!" As Raven's group approaches, Octavia goes in and kills the Children of Gabriel. Following this, Bellamy exiles Octavia from the ship and leaves her to die alone. Back in Sanctum, Delilah and Rose are kidnapped by the Children of Gabriel. When Clarke saves Delilah, Russell changes his mind, letting the Earth group stay in Sanctum. However, he kicks Diyoza out after recognizing her as a terrorist.

4. The Face Behind the Glass

This episode's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. ( April 2020 ) ( Learn how and when to remove this message ) In the woods, Diyoza is approached by Jade, a Sanctum guard who offers to let Diyoza's child be raised in Sanctum if she saves Rose from the Children of Gabriel. The Children of Gabriel are torturing Octavia for information about any hosts (Nightbloods) they have from Earth. Tosh suggests killing Octavia and Rose but Xavier wants to take them to their "Old Man." While the CoG are arguing, Octavia escapes with Rose. The CoG run after them but Diyoza arrives just in time to kill a few and rescue them. However, Tosh ultimately kills Rose. Octavia and Diyoza team up to hunt the remaining Children of Gabriel and their leader, the Old Man. In Sanctum, it's Delilah's Naming Day and part of the ceremony involves making amends. Clarke embraces it but Raven refuses to accept her apology. After the ritual, Delilah comes back as Priya VII and doesn't recognize Jordan. Cillian turns out to be a spy for the Children of Gabriel. He paralyzes Clarke before getting caught in the act and deciding to slit his own throat rather than surrendering to interrogation. Since Clarke is a Nightblood, Russell and Simone take advantage of her paralyzed state to use her as a host for their daughter, Josephine, rather than have to wait a further 56 years for another host to mature at the cost of wiping Clarke's own mind, apparently killing her. After Clarke is mind-wiped, the Lightbournes insert Josephine's mind drive into her head, resurrecting Josephine in Clarke's body.

5. The Gospel of Josephine

This episode's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. ( April 2020 ) ( Learn how and when to remove this message ) After waking up, Josephine kills Kaylee as revenge for killing her last host. She is then forced by her parents to pretend to be Clarke to find out how many other Nightbloods the Earth group has. Jordan suspects something happened to Delilah because she's not herself. He, Bellamy, Murphy, and Gaia find a secret room where they discover that the Primes have been using mind drives to take on new Nightblood host bodies, and essentially live forever, but at the cost of mind-wiping their new hosts, effectively killing them. Having followed them, Josephine defends the Primes, to Bellamy and Gaia's surprise. After learning that Abby knows how to turn ordinary people into Nightbloods, Josephine goes to report but a suspicious Bellamy confronts her. Josephine admits that she's not Clarke before knocking Bellamy out. She decides to use Murphy to get more information by offering him immortality. In the woods, Octavia and Diyoza are chasing after Xavier when they get stuck in a swampy-surface called the crucible. Octavia struggles to get out against Xavier's advice, which causes her to sink faster. When a temporal flare approaches, Xavier throws them a rope to escape but it's too late for Octavia. Diyoza runs from the area and Octavia submerges herself under the crucible surface, not knowing one of her hands is still exposed. Diyoza comes back later to dig Octavia out.

6. Memento Mori

This episode's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. ( April 2020 ) ( Learn how and when to remove this message ) Murphy teaches Josephine how to act like Clarke. Josephine tricks Abby into resuming the Nightblood program by convincing her to save Kane by turning him into a Nightblood in order to resurrect him in another body. She asks Simone to erase Kaylee's family's mind drives and give some to Murphy and Abby for their cooperation. When Madi starts seeing Sheidheda, the Dark Commander, Gaia performs the Separation Ritual for other Commanders to stop him but it doesn't work. After learning about the Primes, Raven confronts Ryker about it. Octavia's hand begins to age rapidly and it spreads up her arm. Xavier says if it reaches her brain, she'll die. Echo goes on a wild goose chase to search for Bellamy, who is actually locked up. Murphy tries to convince Bellamy not to get revenge on Sanctum for Clarke's death. Bellamy refuses at first but eventually caves in. As they mourn Clarke's death, Sheidheda asks Madi to kill Gaia and get revenge by killing them all but Madi banishes Gaia instead. Outside Sanctum, Xavier helps Diyoza find a cure for Octavia's hand but it doesn't work. When Octavia's hand starts drawing a spiral, Xavier realizes that the temporal flare was a message from the anomaly. He teams up with Diyoza and Octavia to go to the anomaly. After Josephine goes to sleep, Clarke is revealed to still be alive, trapped inside of her own head.

7. Nevermind

This episode's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. ( September 2020 ) ( Learn how and when to remove this message ) Trapped inside of her own mind, Clarke learns that she survived thanks to having a piece of A.L.I.E. inside of her from when Clarke entered the City of Light. A.L.I.E. helps Clarke protect the memory of Clarke using an EMP to free Raven from the AI's control as the Primes can use it to get rid of Clarke for good. Searching through her mindscape to try and find a way to stop Josephine, Clarke is confronted by manifestations of her father, Octavia as Bloodreina, and Maya, until Josephine manages to talk Clarke into surrendering by suggesting that this would be the final sacrifice necessary to save her people. However, as Clarke prepares for death, she is confronted by a manifestation of Monty, who convinces Clarke to examine Josephine's memories, revealing that Josephine encouraged a twisted form of eugenics where anyone not capable of producing Nightblood offspring would be killed, preaching that only the Primes deserved to live. Although inspired to continue opposing Josephine, Clarke fails to regain control of her body and enrages Josephine in the process. At the same time, Bellamy and Miller use Clarke's murder to negotiate a deal with Russell. During the meeting, Clarke is able to seize control of one finger and use it to discreetly send a Morse code message to Bellamy that she is still alive. Quickly grasping the implications, Bellamy tells Miller that they will get Clarke back. Josephine warns her parents that Clarke is still alive but knows how to get rid of Clarke for good.

8. The Old Man and the Anomaly

With Raven's help, Abby replicates Nightblood and resurrects Kane in Gavin's body. On their way to the anomaly, Diyoza realizes that Xavier is actually the mythical Gabriel Santiago himself who explains that one of his followers resurrected him in the real Xavier's body against his will after his last host died. Gabriel leads the two women to the anomaly where a hallucination of her daughter draws Diyoza into the anomaly, leaving her fate unknown. When Octavia follows, she emerges healed. At the same time, Josephine plots to get rid of Clarke with the help of Ryker, Emori and Murphy against Russell's will as Russell wishes to restore Clarke and get Josephine a willing new host. Clarke's friends plot to get her back, but Madi falls under the influence of the Dark Commander, murders Miranda and seriously wounds Jordan. Emori betrays Murphy and Josephine to help save Clarke before her body burns out from the strain. Josephine seriously wounds Murphy in a failed attempt to escape and Bellamy departs on his own to enlist the Children of Gabriel's help in removing her from Clarke. Enraged at the deaths of so many Primes and the kidnapping of his daughter, Russell orders his people to use whatever means necessary to find Josephine.

9. What You Take With You

Believing that Octavia was in the anomaly for a longer period of time than it seemed, Gabriel uses Red Sun toxin to try to help Octavia regain her memories. Octavia hallucinates herself in the bunker arena where Charles Pike confronts Octavia over her actions. Pike helps Octavia see that she wants redemption for her actions and Octavia symbolically kills her dark side in the form of Blodreina. At the same time, Kane struggles to adjust to his new body and the morality issues that come with it, particularly after meeting the wife of his host, Gavin. Josephine and Bellamy are captured by the Children of Gabriel while the wall between Josephine and Clarke's minds continues to disintegrate. After awakening Indra, Kane decides to commit suicide by having Indra float him and the Nightblood serum after a tearful goodbye with Abby. With her life in danger, Josephine relinquishes control to Clarke who flees, leaving Bellamy with the keys to his chains in order to make his own escape. Now seeing Josephine in the waking world, Clarke chooses to seek out Gabriel who gets her message alongside Octavia who is now dedicated to saving her friends.

10. Matryoshka

With the help of a reluctant Ryker, Echo and Gaia foment a rebellion against the Primes, leading to a man assassinating Simone. In response, Russell prepares to burn everyone at the stake, but is convinced that Abby can help him create new Nightbloods through bone marrow transplants in order to resurrect all of the Primes. With Madi falling further under the Dark Commander's influence, Raven plots to erase his mind for good with the help of Gaia. As Clarke's body continues to deteriorate, she and Josephine are forced to work together in order to survive. After reuniting with Gabriel and Octavia, they are rescued from Sanctum guards by Bellamy who sends a threat back with Jade that Russell will never see Josephine again if he harms their people. Gabriel removes Josephine's mind drive, but her consciousness is able to hang on inside of Clarke's body and attempts to kill Clarke. With Bellamy urging her to fight, Clarke kills Josephine in their shared mindspace, destroying her consciousness for good and Clarke is reunited with Bellamy and Octavia.

11. Ashes to Ashes

Using Madi's bone marrow, Ryker makes Echo into a Nightblood to become the next host for Simone. Echo tries to convince Ryker to let her go, recognizing that he is conflicted. Echo shares her backstory with Ryker, revealing that she is actually Echo's best friend Ash who was forced to kill the real Echo as a child and take her place. Gaia and Miller manage to escape and rescue Echo before she can be mind-wiped. Echo then kills Ryker. At the same time, Clarke and the others are captured by the Children of Gabriel and work to come up with a plan to defeat the Primes once and for all. They come up with a way to simulate a Red Sun eclipse in order to cause an evacuation of Sanctum. After Jade arrives with Murphy, Clarke poses as Josephine in order to infiltrate Sanctum and take down the radiation shield. Clarke is able to fool both Russell and Madi, but Madi's anger at Clarke's supposed death causes her to fall fully under the influence of the Dark Commander and agree to his plans.

12. Adjustment Protocol

The Dark Commander, now in full control of Madi, threatens to kill her if he is deleted from the Flame; without Becca's notebook, Raven is unable to hack the Flame and delete him. To protect Madi, Abby becomes a Nightblood to give the last doses of bone marrow to Russell. After reconciling with Raven, Abby is mind-wiped by Russell and made into the new host for a resurrected Simone. With Russell preparing to resurrect all of the Primes, Gabriel goes rogue to stop him, but can't bring himself to kill Russell and is captured. Continuing her guise as Josephine, Clarke forces Priya to help her knock out power to Sanctum and reveal the truth about the Primes to the citizens. In retaliation, Russell unleashes a massive amount of Red Sun toxin, causing the citizens to go mad and attack each other with Priya being killed by Delilah's mother in the chaos. The reunited Primes decide to retreat to Eligius IV for the time being, using Raven, Madi and Gaia as hostages while Murphy and Emori choose to remain behind to save their friends.

13. The Blood of Sanctum

Murphy and Emori, posing as Daniel and Kaylee Prime, manage to rescue their friends from zealots. Working together, the group overpowers the Sanctum citizens under the control of the toxin, saving many although an unknown number kill each other in the conflict. After taking over Eligius IV, Clarke is forced to reveal herself to stop the Primes from mind-wiping Wonkru. Clarke floats all of the Primes but Russell into space, enraging Russell who teams up with the Dark Commander to get revenge. Urged by Clarke, Madi regains control and arrests Russell, now the last surviving Prime. With Madi's life at risk, Raven deletes the Flame, but discovers that the Dark Commander was able to upload himself to an unknown location. In the aftermath, everyone is left wondering if they did the right thing while symbols connected to the anomaly are discovered on Octavia's back. Using the symbols causes the anomaly to expand and Diyoza's adult daughter Hope to emerge. Hope states that "he" has her mother and stabs Octavia before collapsing. Octavia vanishes as the anomaly returns to normal, leaving her fate unknown.