Jin and Michael enter into a fight. It's Jin's fault. Sun speaks English with Michael. She tells him that she is scared of her possessive and dominating husband. Kate, Charlie and Locke go with Jack to the source of water. On seeing the caves, Jack thinks it would be better to move all the survivors into the caves. Sawyer and Jack get Kate to move in on their side. Charlie is addicted to heroin. Locke stumbles upon the secret.