After failing in getting Luna's help, the group decides that the only option they have is to take Ontari and free her from Alie before giving her the flame. But before they get on with their mission, they receive the unexpected help of Roan, who then decides to join them.
This is a very solid episode for "The 100", dark, gritty, violent and desperate. The group free from Alie (Clarke, Octavia, Bellamy...) don't have many options, so they decide for a suicide mission. The plot is brilliantly developed, fully of surprises, unexpected turns and difficult decisions for the characters. Very difficult decisions. That the actors pull all this off with credibility is a sign of the good work and chemistry all of them have on screen. And it just gets better and better as the episode continues, hinting at a very interesting showdown for the finale.