In Eden, Clarke sees a bird. She follows it, but at first it doesn't take her anywhere. She tries to kill herself, but then the bird comes back and now it takes her in a green valley. There, while she was radiocalling Bellamy, she sees a kid behind some trees. She tries to talk to her, but the child is scared and runs away. Clarke follows her but falls in a trap and hurts her leg. After, she goes to the lake and while she was drawing, she hears Madi who was secretly looking at her. Clarke goes away and leaves her painting on a stone. Madi notices the painting: it's a portrait of her. After this scene, we see Clarke and Madi after six years. Madi asks Clarke to go picking some berries.
In Sleeping Giants Clarke manages to kill four of the prisoners before getting wounded. She shows Madi a place to hide and runs to divert the prisoners away from Madi. Unfortunately, Clarke is captured by the prisoners led by Paxton McCreary and Miles Shaw. At first, Clarke refuses to talk but decides to co-operate after realizing that Diyoza's prisoners are closing in on Madi. She agrees to tell them everything and in return Diyoza orders her people to spare Madi's life. Clarke makes it clear that there's no one else in the valley besides her and Madi. later that day spacekru manage to get to the ground, the group immediately comes face to face with the prisoners. In a surprise twist, Madi appears from the bushes and kills two prisoners in an instant. Madi tells them that they need to hurry because Clarke is in trouble. They are shocked to hear that Clarke is alive. On realizing that there are other people, Diyoza intensifies her torture for Clarke, claiming that she lied to her. Madi and Bellamy arrive just when Diyoza is dragging Clarke outside to torture her.
In Shifting Sands While Clarke is on a journey with Octavia and Wonkru Madi and the survivors from The Ring who had been hiding in the valley decide to drive to join with Wonkru and hide from the prisoners. at the end of the episode they reunite.
In Exit Wounds Clarke has been lying to Octavia and everyone else that Madi survived the Praimfaya because of synthetic nightblood. She doesn't want anyone to know that Madi is a Natblinda because then it would cause power struggle where the Grounders want her to replace Octavia as the Commander. This would put Madi in danger. She's just a child. Unfortunately, both Gaia and Niylah figure out that Clarke is lying. Clarke manages to stop them from taking any action but realizes that Madi is in danger.
To save Madi, Clarke decides to sneak out with the defectors. Madi doesn't want to leave because she adores Octavia and knows that Clarke would be killed by Diyoza. So, while Clarke is talking to Bellamy, Madi runs away and goes straight to Octavia. She tells Octavia everything about her. Clarke finds them and tries to get Madi away from Octavia - only to be surprised that Octavia actually embraces Madi. Octavia performs a blood ceremony, officially initiating Madi into Wonkru.
Octavia announces that Madi would start her training the following day, preparing her to eventually take over as the next commander. She also promises Clarke that she will protect Madi and her secret.
In Acceptable Losses Madi has started her training with Wonkru. Clarke advises her to do bad on purpose so that no one will see her as a leadership threat. Madi follows Clarke's advice during the first training, but it is too obvious to Gaia. Gaia tells Madi that she agrees with Clarke's advice but Madi has to be less obvious. She tells Madi that she wants to protect her too because it's her job as Flamekeeper to protect the next commander. She shows Madi the Flame she's been carrying and Madi is fascinated by it. Gaia says she will be faithful to Octavia but that she must ensure the Flame's succession. When Clarke goes in to get Madi, she finds her sitting with the other children to show her fighting skills to Octavia. After Ethan wins a round, Octavia order Madi to go next. At first, Madi acts weak as she had agreed with Clarke and Gaia. But then, she changes her mind and fights with confidence, easily overpowering her opponent. Clarke is disappointed. Octavia is impressed by Madi's performance. She orders for Madi to be given a real sword, ready to fight. Octavia tells Clarke that she needs to borrow Madi for a strategy session. Realizing that she can't leave with Madi and that she's tired of the endless cycle of wars.
In Sic Semper Tyrannis After poisoning his sister, Bellamy tells Indra and Clarke about it but lies to Madi and everyone else that Octavia is just sick. They agree to leave Clarke tied up while they initiate their plans for peace. Since no one can listen to them, Indra and Bellamy devise a plan to have Madi become the commander. They would then use Madi to do according to their ideologies and the grounders would listen to Madi because she's a Nightblood. Indra asks her daughter, Gaia, the Flamekeeper to perform the ascension ceremony for Madi. Gaia is reluctant because she made a promise to both Madi and Clarke. Gaia grees to do it only if Madi accepts the flame. Madi doesn't want to take the flame because Clarke wouldn't want that. But Bellamy convinces her to take it, by lying to her that it would be the only way to save Clarke. After that, Bellamy goes to Clarke and tells her about the plan but Clarke refuses to accept it because Madi is just a child and they would be putting her in danger. So, Bellamy decides to keep Clarke chained until the ceremony is over. after Niylah helped Clarke to get out of the cell Clarke goes into where Octavia and Indra are. She points a gun at Octavia. After a little argument, Octavia convinces Clarke that they're on the same side. They both don't want Madi to become the commander. So, Clarke and Octavia make a deal - Clarke would help Octavia stop the ceremony and Octavia would help Clarke and Madi escape to the valley. By the time they get to Madi's ascension ceremony, Clarke and Octavia find that Madi has already taken the flame and is unconscious waiting for the flame to take over. Octavia orders one of her guards to take Clarke and Madi to the rover. After getting to the rover, the guard tries to shoot them in Octavia's name. But then Madi wakes up and asks him to drop the gun. She recites the lineage, implying that the ceremony worked and she's now a rightful commander. The guard kneels down and calls Madi "Heda!" But then, Clarke shoots the guard and forces Madi into the vehicle against her will.
In The Warriors Will On their way to the valley, Madi insists that she wants to go back to the bunker to help her people but Clarke forces her to stay in the rover. They find that Octavia had kept the worms inside a bottle in the trunk. Clarke drops the bottle, releasing the worms onto the ground. Madi then starts getting scary memory flashes of the commanders before her - including Lexa and even Becca - because of the flame. When she mentions her plans to remove the flame, Madi asks her to destroy it because otherwise she will put it back in. However, when Madi goes to sleep, Clarke is unable to remove the flame after noticing Madi crying. Clarke tells Madi that she thinks of her as her child and she doesn't want to see her die young and horribly like the other commanders.
Upon arriving at the valley, Clarke and Madi are shocked to see McCreary's people killing the defectors. When one of the prisoners is left to bury the dead, Madi and Clarke approach him and force him to tell them what's going on. He explains that McCreary is in charge now and that Diyoza is in hiding. They ask where to find Abby. After that, Madi kills him immediately. Clarke and Madi head to the gas station medical room. They find Abby lying on the floor, unconscious, due to overdosing.
In The Dark Year After finding Abby unconcious, Clarke and Madi start working to resuscitate her. Clarke makes her throw up to reduce the opiates intoxication, regaining consciousness. Just then, McCreary enters the room and wonders how Clarke and Madi got in without being detected by "the eye." Without hesitation, Clarke reveals that Wonkru worked with Raven and Echo to turn off the satellite camera and replace its feed with a video loop. Clarke and McCreary make a deal for him to let her and Madi stay as long as Clarke gets Abby back on her feet to treat McCreary and his people.
Madi confronts Clarke for betraying Octavia and Wonkru to McCreary but Clarke insists that it is the only way to keep her and Madi alive. Madi disagrees, arguing that they wouldn't be able to live with themselves. After waking up and hearing Clarke's plan, Abby opposes it too. She tells Clarke that McCreary is a horrible, dangerous. But Clarke insists that she and McCreary have to work together because they both want the same thing - to stop Octavia. As Clarke works on opiates detox process for Abby, Abby says that she's not worth saving. She starts telling them what really happened at the bunker during the dark year.After revealing this to Clarke and Madi, Abby starts crying, admitting that it was her fault. She is responsible for what Octavia has become. This gives Madi confidence to defend Octavia in front of Clarke. She tells Clarke that Octavia did what she had to do to save her people. Octavia bore the burden so that her people didn't have to - just like Clarke did at Mount Weather. Clarke is shocked that Madi knows about Mount Weather. Madi then calls out Clarke for pretending to be the hero. She says that the real heroes have always been Octavia, Raven, Bellamy and even Murphy. Madi declares that she is ashamed of Clarke. Clarke tries to justify herself and goes to help Abby treat McCreary and his people.