Inside the hatch, Jack and Locke encounter , who has been living there alone for three years. Desmond explains that a code must be entered into a computer every 108 minutes to "save the world".

: It is eventually revealed that she is actually working with their captors, who are later identified as the survivors from the plane's tail section. Locke's Flashback

The episode's flashbacks focus on struggle to move past his father's betrayal.

: A woman named Ana Lucia is thrown into the pit with them, appearing to be another prisoner.

: Despite Helen's support, Locke is unable to break free from the psychological hold of his father, Anthony Cooper, who bluntly tells John he is "not wanted" after having already conned him out of a kidney.

In the third episode of Lost 's second season, titled the survivors continue to uncover the mysteries of the hatch while grappling with the arrival of new, potentially hostile figures on the island. The Hatch and the DHARMA Initiative

: A central conflict erupts between Jack, who believes the button is a psychological experiment, and Locke, who views it as their new purpose. Desmond ultimately flees the hatch, but not before Jack recognizes him from a chance meeting years earlier at a stadium in Los Angeles. The Tail Section Survivors

On the other side of the island, Michael, Sawyer, and Jin are held captive in a "tiger pit" by a group they initially believe to be the "Others".