
"Part 1"
Jack Shephard awakens in the jungle, disoriented, battered and bruised, noticing for a fleeting moment a yellow Labrador retriever darting through the bamboo forest. As he attempts to gather his thoughts, he discovers a small bottle of vodka in his suit pocket. Finally able to stand, he crashes through the jungle vegetation and emerges onto an expansive beach, where he is confronted by the carnage of the airplane crash of Oceanic Flight 815 piloted by Seth Norris portrayed by Greg Grunberg. Jack, a distinguished surgeon, darts from one survivor to the next, organizing the survivors, giving orders and administering medical aid. In quick fashion, he rescues a man pinned under wreckage, assists the pregnant Claire and enlists Hurley to watch her, and administers CPR to Rose, saving her life.
After the initial shock of the crash passes, Jack retreats to a quiet area beyond the beach to tend to his own minor injuries when he notices Kate watching him. He asks for assistance, which she reluctantly gives, and helps suture the wound on his back. During the procedure, Kate reveals that their plane had broken apart in mid-air. Hours later on the beach, while Kate curiously observes Jack tending to a critically-injured unconscious passenger, survivors Michael and Walt discuss what to do with the bodies in the wreckage, while an uninterested Sawyer looks on. Sayid organize a clean-up crew, while Hurley salvages meals from the plane's galley and distributes them to the survivors. Shannon refuses chocolate offered by her brother Boone, believing that rescue is imminent.
That night, the peacefulness of the camp is disturbed by loud roaring noises and crashing trees emanating from the nearby jungle. In the morning, Jack decides that the survivors need to send a distress signal to have any hope of rescue, and he believes the best solution is to use the plane's transceiver, located in the cockpit of the plane. Kate claims to have seen smoke from somewhere within the jungle and asks to come with Jack to find what is hoped to be another part of the plane's wreckage. With Kate and Charlie, Jack sets off into the jungle to find the cockpit. As they move deeper into the jungle, they encounter a sudden rainstorm. When the trio finds the plane, resting against a tree, they are forced to climb through the rows of seats to reach the cabin. Inside, they find the pilot still in his seat. Charlie disappears into the bathroom while Jack and Kate find the pilot awaking with a start from a concussion. He tells them that the plane had lost radio contact six hours after take off, where it turned back for Fiji and hit turbulence. The plane was a thousand miles off course when it crashed.
Meanwhile, on the beach during the rainstorm, a group of survivors takes refuge in the wreckage. While huddled there, a young Korean man, Jin, tells his wife, Sun, that she should remain close to him at all times. Even though most of the survivors have taken shelter, John Locke remains outside and sits alone in the rain on the beach with his arms outstretched. Back in the plane's cockpit, the conversation is interrupted when the strange roaring noise that the group heard from the jungle the previous night returns. When the pilot investigates, he is seized by something outside, which drags him through the cockpit window, prompting the trio to grab the transceiver and flee. During the escape, Charlie falls. Jack returns to help him, while a terrified Kate runs on. After the entity disappears, Kate, Charlie and Jack reunite and find the pilot, his bloodied corpse suspended in a tree top.

"Part 2"
Jack,
Kate, and
Charlie head back to the beach. Kate asks Charlie what he was doing in the bathroom, and he says he was sick, but in a flashback, it is revealed that Charlie had been doing drugs in the bathroom, and attempted to flush his stash but had been prevented by the sudden onset of turbulence.
On the island, while looking for his dog Vincent, Walt discovers a pair of handcuffs. After he shows Michael the cuffs, Sawyer attacks Sayid whom he believes is an Iraqi terrorist who blew up the plane. They are soon stopped by Michael and the returned Jack. Sayid manages to repair the transceiver, but it does not have a signal or much battery life. While working on it, he reveals to Hurley that he was a communications officer with the Iraqi Republican Guard in the Gulf War. While reading a letter sadly Sawyer decides to go with Sayid and the group (Kate, Charlie, Shannon and Boone) to bring the transceiver inland in an attempt to reach higher ground and get a better signal. Along the way, they are attacked by a charging polar bear, which Sawyer shoots and kills. He then explains that he got the gun from the body of a dead U.S. marshal. Sayid accuses Sawyer of being the marshal's prisoner. Kate takes the gun from Sawyer, and Sayid instructs her on how to dismantle it. At this point, Sawyer becomes relatively disliked by the other survivors.
Shannon attempts to understand the signal
Shannon attempts to understand the signal
A flashback shows the final moments of the flight. Kate is talking to the marshal, the same injured man to whom Jack had been tending, on the beach. On the plane, it can be seen that Kate is wearing the handcuffs that Walt found in the jungle. As the turbulence hits, the marshal is knocked unconscious by a falling suitcase. Kate uncuffs herself, and puts the marshal's oxygen mask on him before attaching her own, at which point the tail end of the plane suddenly breaks off and falls away.
Back at the beach, the marshal wakes up during the operation and asks Jack, "Where is she?" Inland, Sayid turns on the transceiver and it has a signal. However, it is being blocked by a transmission in French that has been repeating for over sixteen years. Shannon translates it: "I'm alone now, on the island alone. Please someone come. The others are dead. It killed them. It killed them all." The group gives each other meaningful looks before Charlie says "Guys, where are we?".
To be continued...