Now centuries later, among the survivors, the Smoke Monster assumes the form of "John Locke", returned to the island in a coffin. This "Locke" had convinced "Ben" to enter the seaside cave and stab "Jacob", who fell into the fire and died. With many survivors believing that "Locke" has been resurrected, they follow him in various plans to leave the island. In one plan, they overthrow the guards at "Widmore's" submarine, and leave the island, unaware that a time bomb is inside the submarine. "Jack" (the doctor) discovers the time bomb, advising them not to disarm it while reasoning that the Smoke Monster cannot kill anyone directly. Instead, "Sawyer" (Ford) refuses to listen and pulls the bomb wires, which, instead, causes the bomb to count down faster. "Sayid" grabs the bomb and runs through the submarine, sacrificing himself to shield the others from the bomb blast. However, the bomb splits the submarine walls, and while sinking, "Sun-Hwa" is trapped in the wreckage, but "Jin" stays with her, vowing to never leave her side again, as they both die underwater.