Kane is locked in the grounder prison trying to get a chain off his ankle.

Jaha: Kane, stop. If they'd wanted to kill they would've done it already.

Kane: Two days without food or water.

Jaha: Come on, how many times on the Ark did we go two days without water? This is not how our story ends, Marcus. We didn't wind up in the same train station on the ground just to die in it. We still got work to do.

Kane: How can you be so sure?

Jaha: My son told me

Kane stands up when he notices two grounders entering. They come and take Jaha who fights back

Kane: Stop! We came in peace! We came in peace, please!

Gustus: You speak of peace when you send an assassin into one of my villages.

Kane: What are you talking about?

Gustus: Blood must have blood. One of you will die here, today by the other's hand. We will hear the terms of your surrender from the man who lives.

Jaha and Kane argue both trying to sacrifice themselves until one speaks to Lexa the seemingly innocent young girl observing them.

In truth Lexa was the Heda and none of the sky people knew it. No one thought that the great Commander would be just a kid about Clarke’s age. Though no one from Skaikru knew the Flame the Heda carried transferred all the knowledge wisdom and memories of past Commanders into them. Lexa didn’t have a normal childhood or really any childhood she was trained since age to to be a warrior and she became Heda at 12 after killing the other Nightbloods in the Conclave. After losing Costia Lexa completely stopped acting from her emotions, believing love is weakness and blood must have blood. Lexa was judging from her looks either in her late teens or early twenties.

Lexa was portraying herself as an innocent young Trikru girl with a limp, she was trying to study them before she revealed the truth

Jaha: What's your name?

Lexa: Lexa

Jaha: Lexa, I'm Thelonious and this is Marcus. Your commander spoke of an assassin in the village?

Lexa: Yes, eighteen of our people were murdered. Elders, children.

Kane: We had nothing to do with it

Lexa: It doesn't matter, the commander thinks you did. One of you must pick up the knife that is our way.

Jaha: and if we refuse

Lexa: Then the commander will use it to slit both of your throats.

Jaha: There has to be some other way to resolve this. Something that we haven't thought of yet.

Lexa: there isn’t

Kane: She’s right they’re not budging

Jaha: We can offer a trade, these people are primitive I've seen how they live. Our technology our medicine, all we ask for in return is peace

Kane and Jaha argue more but Jaha decides to take a knife to Lexa though Kane tries to stop him