In the aftermath of a monumental explosion, reality shifts for everyone associated with the mystical island.

As the power of the island to both heal and destroy comes into sharp focus, the lines between good and evil are blurred and loyalties are challenged when the survivors of the crash become tangled within the lives of the Others.

When destiny calls, the Oceanic 6 frantically race back to the island. As a result of Ben moving the island, the survivors left on the island begin skipping through time. The survivors discover that they've run into The Others 50 years in the past, but Richard Alpert is the same age. In Los Angeles, Kate tries to find out who is trying to take Aaron away from her. In order to avoid being killed, Ben promises to offer proof to Sun that Jin is still...