Plot summary
Locke starts a relationship with Helen Norwood as he stalks Anthony Cooper. After several months, she convinces Locke to move on with her. In the present, the raft group is imprisoned in a pit and Ana Lucia, a survivor of Oceanic Flight 815's tail section, questions them. Kate ambushes Desmond and he accidentally shoots the computer. Jack and Locke find an orientation tape from the "DHARMA Initiative" identifying the hatch as the "Swan station", where "Marvin Candle" explains that after an "incident" employees must enter the numbers into the computer once the timer has four minutes left.
Jack follows a fleeing Desmond, believing the computer to be a social experiment, and Desmond finally remembers him. He asks what happened to Sarah, and Jack admits that they are now divorced. Sayid fixes the computer and Locke presses Jack to enter the code, which he reluctantly does with one second to spare.
Credits
Adapted from Wikipedia contributors, Lost season 2. HTML formatting and reference markers removed.