Contains spoilers for this episode and earlier episodes.
After Shannon is shot, Sayid draws his weapon on Ana Lucia, but Eko intervenes. Ana Lucia has Sayid tied to a tree and demands supplies so she can leave the group and live alone. Eko refuses to leave the critically ill Sawyer waiting and carries him toward the main camp. Jack begins treating Sawyer in the hatch, while Kate helps him swallow medicine. When Jack hears Ana Lucia's name, he remembers meeting her before the flight. Eko agrees to lead him back provided that he comes without a gun. Other members of the tail group abandon Ana Lucia's standoff and accompany Jin toward the beach.
Flashbacks show Ana Lucia returning to police work after surviving a shooting. She struggles with the pressures of the job and is given the opportunity to identify the man who attacked her. She denies recognizing him so he will be released, then follows and kills him herself, telling him that she had been pregnant. On the island, Ana Lucia tells Sayid about being shot but conceals her revenge. She frees him and offers him the opportunity to kill her. Sayid refuses, recognizing their shared despair, and goes to Shannon's body. At the beach, Sun and Jin reunite, as do Rose and Bernard. Sayid carries Shannon back to camp while Jack and Ana Lucia face one another.