LOST Season 3 Episode 23
Charlie and Desmond are in the Dharma station, the Looking Glass. Once Charlie has turned off the jamming signal, he sees a face come through on the monitor and begins speaking to her. He quickly finds out that it's Penelope, who he knows is Desmond's long lost love, and he asks her if she's in the boat that is somewhere out in the ocean looking for them. She says that it is her boat and asks where they are. Charlie tells her they are on an island, and calls for Desmond to come to him.
Desmond is gathering the scuba equipment together in the main room and looks around to see that Mikhail's body has disappeared. Desmond runs to Charlie and he sees Penny on the monitor. At that very moment Mikhail appears swimming outside the small window of the underwater room and you see there is an unpinned grenade in his hand. Charlie grabs Desmond, pulls him out of the room, and locks the door behind them. By so doing, he has successfully kept the entire underwater station from flooding. Forced out of the room and away from their only source of communication with Penny they hurry to put on their oxygen tanks. They must swim back up to their boat and row back to shore to tell the others.
Once they reached the surface and climbed into their canoe they see a helicopter off in the distance flying in their direction. Finally. A feeling of unexplainable relief comes over both of them and they begin to cheer. They row hurriedly toward to beach to meet the helicopter that is soon to land. As they begin to near the shore line Desmond sees Penny, and time stands still as she steps onto the sand. It's really her, the love of his life, the one thing that kept him holding on for all these years, standing a hundred feet in front of him. He dives out of the boat and swims through the waves, running onto the beach. They are finally reunited.
Charlie makes it to them and tells Penny that the others are just down the beach a couple of miles. Her crew begins to radio the boat when Jack, Kate and Sayid appear from down the beach running toward them. They're being rescued. It's true. It's really happening.
As Charlie is gathering his things together he sees John sitting in the sand staring out at the freighter. Charlie walks over to Jack and asks him what's going on with John. Jack explains that John thinks crashing on this island is the best thing that ever happened to him, and that he's not going home with them.
Charlie climbs into the motorboat and watches the island become more and more distant, and he reflects over his time on the island. He flashes through the memories he has of the crash, overcoming his heroin addiction, meeting Claire, the day Aaron was born, falling in love with Claire, and how he had become such a better person.
The scene cuts to the next day, when the freighter is arriving at the harbor back in Australia. Standing out on the deck of the ship Claire smiles apprehensively at Charlie and asks him if this is real. They walk off the boat with baby Aaron, happily followed by the other survivors to live a life free of polar bears, smoke monsters, and "others".