The survivors of a plane crash find themselves stranded on a mysterious island. They are forced to work together for their survival when they realise that they are not alone on the island.
Pilot: Part 1
Forty-eight survivors of an airline flight originating from Australia, bound for the U.S., which crash-lands onto an unknown island 1000 miles off course, struggle to figure out a way to survive while trying to find a way to be rescued.
Pilot: Part 2
Having retrieved the plane tranceiver, a group of survivors try to transmit a signal, only to receive a strange transmission from another inhabitant.
Jack and Hurley discover an alarming secret about Kate, while the marshal's life hangs in the balance.
When the survivors run out of food, Locke, Kate, and Michael go out hunting for boar. Michael gets injured, so he and Kate go back. But Locke stays out hunting, and ends up running into the creature living in the jungle.
Jack begins to experience visions of his dead father Christian. He runs into the jungle trying to find him, but things go wrong when he falls down a hill and off a cliff.