Some of the survivors move to the caves, while some stay at the beach. Locke exchanges Charlie's heroin for Charlie's guitar. Jin attacks Michael because he has Jin's father-in-law's watch; however, only Jin's wife Sun knows this because they do not speak English. Jin is handcuffed to the wreckage. Sun reveals to Michael that she can speak English and explains why Jin attacked Michael, after which Michael frees Jin. Flashbacks show that Jin had to take a job working for Sun's father for her hand in marriage. One night, after they are married, Jin returns home covered in someone else's blood. Sun secretly plots to leave Jin (hence the secret English lessons); however, she changes her mind in the end.