What is the main drama of the American drama Lost from the first season to the fourth season?

Located on an unknown island in tropical waters, at the beginning of the blue sea bordering the golden beach, the broken wreckage of the plane is accompanied by the wailing of the passengers who died, which opens a mysterious story. In 2004, Flight 8 15 crashed on the island on the way to its destination. Only 48 passengers, including Jack Shephard and kate austen, survived. After the initial panic, a group of people with different ages, different occupations, different countries, different nationalities and different backgrounds will inevitably have conflicts and collisions in this isolated and food-deficient cramped space. At the same time, there seems to be some unknown and threatening creatures hidden on the island, and their every move seems to be monitored by a pair of clever but mysterious eyes. The unpredictable future, one mystery after another, and the seemingly never-coming rescue team make the survivors feel at a loss.

Lost Season 2

Survivors found a mysterious building entrance on the island, and they explored it under the guidance of Jack. After forcibly entering the hatch, they found someone inside, which was Desmond that Jack had seen once in reality. Like seeing a savior, Desmond left a string of digital passwords and ran away, while Jack and his party needed to take over his task-enter the password every 108 minutes and turn off the alarm. At the hatch, the survivors found enough food and learned the background of the island from a video, which seems to be related to a failed experiment. On the other hand, Michael and others who set up bamboo rafts to try to leave the island did not successfully sail to the deep sea, but were taken to the other side of the island by the tide, and found a group of survivors at the tail, holding Michael and others and slowly approaching the camp.

Lost Season 3

Everyone continues to explore the secret of the isolated island and try to get out. Unexpectedly, there are "others" on the island. They are in good order and have lived here for a long time. "Others" put Jack, Kate and Sawyer in prison, and they managed to escape. It was a woman named Juliet who helped Jack escape. She followed Jack to the camp and exposed the Dharma organization on the island. Now the leader of "others" is the one who sabotages dharma initiative. Juliet came to the camp, as if with a mission entrusted to her, that is, to take away pregnant women among survivors.

Lost Season 4

In the second half of the third season, Jack seems to have the upper hand. He demanded the release of Kate and Sawyer and their safe return to the island, and he was willing to stay. But what is Jack's real motivation? Kate finally made a choice between Jack and Sawyer. Are her feelings real? Juliet made a dangerous decision. After Eko's death, Locke's exploration of the mysterious things on the island convinced Sayid that his motive was not survivors. Sun and Jin are celebrating the arrival of a new life. Is the child gold?