Lost: ...in Translation

Michael and Walt continue work on the raft, but are forced to down tools when Jin and Sun have a fierce row on the beach. Michael steps in to help, but ends up brawling with Jin again. Later, Sun and Kate talk about Jin's aggression, but are interrupted by a commotion: someone has set fire to the raft. And Sayid and Shannon grow closer, but Boone offers Sayid some advice about his sister that leads him to rethink their relationship.