The Mountain Men have begun to harvest the 100 for their bone marrow. With Cage in power and Dr. Tsing leading the charge, Jasper, Monty and the gang are not safe. Bellamy is on the inside and disguised as a guard he is able to get a message (and a gun) to Jasper. Meanwhile, at Camp Jaha, Bellamy's news that the Arkers are being harvested puts a wrench into Clarke's plans. She is suppose to go to Ton DC for a Grounder summit, but decides to send Kane in her place. Jaha and Murphy are in the Dead Zone making their way through the desert to find the City of Light. In their travels, they come across a lone woman named Emori. She joins their group and bonds with Murphy. Bellamy, with Raven and Clarke in his ear, overhears Cage talking about attacking Ton DC with a missile. Clarke is frantic to get there in time to stop it, but lies to Bellamy about Octavia's location so that he keeps his head in the game. She tells him that Octavia is at Camp Jaha, but really she is with Indra at Ton DC. O is nervous about Lincoln's absense, but Indra won't let her worry until after the war. Needless to say, she doesn't have to worry at all, because she soon finds him in the woods. He is clearly addicted to the red, but is not a full Reaper yet. Octavia tells him to be strong and fight it. Clarke makes it to Ton DC and warns Lexa of the missile. Lexa tells her that the two of them need to slip out unnoticed because if they evacuate it will clue Mount Weather in on their inside man, and he hasn't suceeded in his mission just yet. Clarke doesn't like this idea, but hesitantly agrees that it is the only way. She manages to save her mother, who shows up at Ton DC unexpectedly. After the missile hits, Abby realizes that Clarke knew and is appalled by her daughter's actions. Meanwhile, Kane and Indra are MIA and we can only hope that they made it to the woods in time.