It centers on Jin-Soo Kwon (Daniel Dae Kim), who brutally attacks Michael Dawson (Harold Perrineau); the survivors do not know why since Jin and his wife Sun-Hwa Kwon (Yunjin Kim) only speak Korean. Meanwhile, Jack Shephard (Matthew Fox) proposes that the survivors move to the caves from the beach. The episode was the first to feature the backstory of Sun and Jin, and the former is shown in the episode's flashbacks.