The survivors split into two groups; one led by Sawyer, the other by the Man in Black. Sawyer’s group travels to Hydra Island, where they are captured by Widmore’s crew…

Ilana discovers Ben killed Jacob, so she plans to kill him. Meanwhile, Jack, Hurley and a suicidal Richard visit the Black Rock. In the flash sideways, Ben, a high school…

On the island, Widmore subjects Desmond to a large amount of electromagnetic energy as an experiment. In the flash sideways, Desmond, with the aid of Charlie, starts to have visions…