LOST: House of the Rising Sun S1E6
Sun and Jin episode. Off-island we see Sun and Jin having a secret romance, talking about getting away from Sun's father, whom Jin does not know. Jin does get permission from Sun's father to marry her, but he has to work for Sun's dad. Sun has mixed emotions. She wants marry Jin but she doesn't want Jin working for her dad.
We see Jin transform from a sweet guy to the jerk we know today. We see than Sun is planning on running from Jin and her father. Last minute she changes her mind when Jin gives her a flower. She decides to stay with Jin, and that's how they end up on 815.
On island, Jin attacks Michael out of nowhere. We have no idea why.
Sun knows why and we find out that she speaks English. Turns out the
Jack decides to bring the people to the water, to move people to the caves with the fresh water.
Locke knows that Charlie's on heroin and he won't leave him alone.
Half the people move with Jack to the caves. Half stay at the beach hoping for rescue.