Event Year: 2004

Jack is nearly delirious from lack of sleep and struggles to overcome the haunting events that brought him to Australia and, subsequently, to the island. Meanwhile, Boone gets caught in a treacherous riptide trying to save a woman who went out swimming. A pregnant Claire’s health takes a bad turn from lack of fluids, and a thief may have stolen the last bottles of water. Veronica Hamel guest-stars as Jack’s mother, Margo.

Also, Jack flashes back at 12 years old, to find himself on the playground in an altercation with a bully, who ultimately beats him up, and later learns a life lesson from his father.

Kate goes to extreme measures to save Ben’s life when Jack refuses to help. Meanwhile, Kate begins to tell the truth about the lie in order to protect Aaron.

After the remaining survivors are reunited, Sawyer and Jack hatch a plan to divert the Man in Black’s attention and leave the island without him on Widmore’s submarine, but disastrous consequences await them. In the flash sideways, Jack investigates the cause of Locke’s paralysis and offers treatment.

The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the underwater “Looking Glass Hatch”.

Juliet is forced to reveal some startling news to Jin when Sun threatens to move to Locke’s camp. Meanwhile, Sayid and Desmond begin to get an idea of the freighter’s crew when they meet the ship’s captain.

Locke’s mission off the island as Jeremy is revealed.

When Sawyer escapes from the temple, Kate and Jin are sent to bring him back. Meanwhile, the Others determine Sayid is infected and attempt to poison him. In the flash sideways, Kate, still on the run, takes Claire to a hospital when she goes into labor.

Stripped of everything, the 48 survivors scavenge what they can from the plane for their survival. Some panic. Some pin their hopes on rescue. A few find inner strength they never knew they had-like Kate who, with no medical training, suddenly finds herself suturing the doctor’s wounds. The band of friends, family, enemies and strangers must work together against the cruel weather and harsh terrain. But the intense howls of mysterious creatures stalking the jungle fill them all with fear. Fortunately, thanks to the calm leadership of quick-thinking Jack and level-headed Kate, they have hope. But even heroes have secrets, as the survivors will come to learn.

After Jin is kidnapped and taken to Hydra Island by Widmore’s team, the Man in Black confronts Widmore. On the main island, Sun loses her ability to speak English. In the flash sideways, Sun and Jin are abducted after failing to complete a transaction for Sun’s father.

Walt and the others are shocked when Michael is brutally beaten, but only the non-English-speaking Jin and Sun know the truth behind the attack. Meanwhile Kate, Jack, Sawyer and Sayid argue about where the survivors should camp — on the beach, where they’re more likely to be seen, or in a remote inland valley where fresh water abounds; and Locke discovers Charlie’s secret.

The remaining island survivors start to feel the effects of the aftermath of moving the island, and Jack and Ben begin their quest to reunite the Oceanic 6 in order to return to the island with Locke’s body in an attempt to save their former fellow castaways.

Kate is still struggling over their decision to leave Jack in the hands of the Others as she and Sawyer return to their camp. Meanwhile, Hurley finds an old van in the jungle and attempts to use it to help a fellow survivor in need of faith and hope. Flashbacks reveal more of Hurley’s tumultuous past with the numbers curse.

Sayid goes back to the island to bring the rest of the people to the freighter. Ben, Locke, and Hurley go to another Dharma station in order to “move the island”.

After recruiting Sayid to his cause, the Man in Black issues an ultimatum to the Others: either join him or die. Meanwhile, Kate is reunited with Claire. In the flash sideways, Sayid helps his brother, who is in debt to a loan shark.

Everyone on the island is at risk when one of the survivors decides to go against them and taking matters into their own hands.

After discovering something odd just offshore, Jack and Sayid come up with a plan to confront “The Others” and hopefully get Walt back. At the same time there will be an answer to the question of where Michael has been and resolution of him and Walt. Meanwhile, Eko and Locke come to blows as Locke makes a potentially cataclysmic decision regarding the “button” and the hatch. Lastly, Desmond returns and he sheds some more light on his experience on the island in the three years prior to when Locke came down into that hatch.

Juliet receives an unwelcome visit from someone from her past and is given orders to track down Charlotte and Faraday in order to stop them from completing their mission — by any means necessary. Meanwhile, Ben offers Locke an enticing deal.

The members of Oceanic 6 discover how to get back to the island, but not all of them want to return.

A mysterious illness that baby Aaron suddenly contracts sends a desperate Claire, Kate and French woman Danielle to return to the same area where Claire was initially kidnapped. It is there where she believes she can find a cure for Aaron’s illness. In the meantime, Jack and Locke are doing their best to keep their prisoner a secret from the rest of the survivors on the island.