The Three Plots of Twenty Thousand Miles Under the Sea

20,000 Miles Under the Sea was a science fiction novel by Verne. The following are the three plots of the novel: The Nautilus sank: At the beginning of the story, the protagonist Avatar was driving the Nautilus submarine on the Pacific Ocean. Due to the underwater volcanic eruption, the Nautilus sank due to natural disasters such as the Great Whirlpool. Avatar and the crew were trapped in the deep sea. 2. Search for a source of life: In the depths of the sea, Avatar and the crew found a strange creature called "Jellyfish Lake". They could float and swim freely in the water and seemed to be able to provide a source of life. In order to find more clues, Avatar and the crew began to explore this mysterious underwater world and encountered many dangers and challenges. 3. Discovering a mysterious civilization: In the process of in-depth exploration, Avatar and the crew discovered a mysterious underwater civilization. They used technology and magic to establish a highly advanced society, but there were many unknown secrets and conspiracies hidden behind the civilization. Avatar and the crew were forced to engage in a life-and-death struggle with this civilization. In the end, they successfully saved the civilization, but they also paid a heavy price.