Later, Sayid and Jack talk about Michael, and Sayid comes up with a plan that Michael will lead the one group by land and Sayid will use Desmond's boat to get to the other side of the island so that he can scout the Others' camp. Then the two parties will join up to go after the Others.
Meanwhile, Eko sits in front of the computer and Locke tries unsuccessfully to get him to stop pushing the button.
Sayid asks Desmond if he can use the boat. Desmond says he can, but won't go with him, so Sayid has to find someone who knows how to sail. Jin agrees to go with him and Sun insists on going too.
Charlie sees Locke leaning up against a tree sobbing. Charlie seems pleased and tells Locke that Desmond is back.
Desmond tells Claire that she's wasting her time with the vaccine.
Locke and Desmond talk. Locke tells Desmond about The Pearl and that the button is not real. He talks Desmond into going with him to the hatch.
From the sailboat, Jin, Sun, and Sayid see a big statue of a foot with four toes.
In the hatch, Locke and Desmond trick Eko into going out of the computer room and Desmond causes a lockdown. Locke and Desmond are in the computer room and Eko is outside the room. Eko gets Charlie to show him where the dynamite is and they return with it.
In the jungle, Kate realizes that they are being followed and shoots one of the Others. The other one gets away. Jack forces Michael to tell them the truth and he tells them about the list. Jack says he has a plan.
Charlie tries to talk Eko out of blowing up the blast door. He tries to reason with Locke. Desmond says the door will hold. Eko lights the fuse.
Desmond tells Locke that he thinks his friends blew themselves up. Locke says they are not his friends. Desmond wants to open the doors, but Locke won't let him.
Sayid sneaks into the Others' camp and figures out that they are not there.