Jack wakes up in the middle of the jungle (he blacked out during the plane crash) to see a dog next to him (later, we find that this is Walt's dog). He finds his way to the crash site, where dozends of dazed (and some wounded) survivors are milling about the wreckage. He recruits Hurley to help him get the very pregnant Claire away from the wreckage, and Locke to help him move another wounded man. A survivor wanders too close the still-running, beached jet engine, and is sucked inside, causing a massive (and final) explosion. Claire falls on her stomach, and her baby is silent until over 24 hours later.
Later, Jack digs through some recovered luggage to find a sewing kit, and gets Kate to help help stitch up a laceration on his upper back. They bond, becoming the focus pair of the episode. That evening, everyone is startled by some loud rumbling and tree-shaking coming from the edge of the jungle.
The next morning, Jack, Kate and Charlie set out to find the cockpit of the plane, hoping there is a viable transciever they can use to send a broadcast signal. They climb inside the steeply-angled nose of the plane, and they startlingly wake the unconscious pilot (Greg Grunberg). After helping them find the transciever, there's another loud growl from outside the cockpit. While Charlie secretly recovers the bag of cocaine he left in the airplane's bathroom, the pilot looks out through the broken cockpit window - and is pulled out and fatally mangled, splattering blood everywhere. (Had this been Jurassic Park, a Tyrannasaurus would have been the monster, but we don't actually see the culprit.)
Charlie, Kate, and Jack freak, and escape the plane nose with the transciever. After a bit of "who's not going to make it?!" we find that all three survived, but no one saw the monster.
Meanwhile, Walt is out looking for his lost dog (from the beginning of the episode), and he and his father Michael find a pair of handcuffs. Later, back at camp, Walt and Locke bond over a recovered board game, and Sayid and Sawyer get into a fight (Sawyer calls Sayid a terrorist and blames him for the crash).
Later, Sayid repairs the slightly broken transciever. Once it's fixed, Sayid, Charlie, Kate, Jack, Boone, Shannon, and Sawyer head out to find higher ground to broadcast. As they move through the forest, a rumble rushes toward them. Everyone runs but Sawyer, who whips out a gun and starts shooting at the sound, stopping it. Sawyer says he got the gun off of the body of a US Marshall, and everyone in the group soon believes that he was the prisoner held in handcuffs. Through flashback, we find that the real criminal is... Kate, who was being extradited to the US (from Australia, where the plane took off from). As the rapid descent begins, a suitcase falls and knocks the Marshall unconcious - Kate uses that time to undo her handcuffs so she can grab an oxygen mask.
As this happens, Jack and Hurley are trying to save a man with a piece of shrapnel in his gut. As they work the man wakes up and says, "Where is she?!" - it's the US Marshall.
Oh, that rumble that Sawyer shot? It was a POLAR BEAR.
Finally, they come to an area where they're able to broadcast, but their signal is being overpowered by an existing transmission. Translated from French, the message says (paraphrase): "Please, help - I'm all alone. They're all dead now. It killed them all. I'm alone now." Following the message, an automated voice says: "Iteration 17294532" - and the message repeats, followed by "Iteration 17294533." It's a looped distress call, and Sayid calculates that the message has been repeating over and over again... for sixteen years.
Edited by Aatrek, Aug 30, 2004 @ 12:09 AM.