Around the World in 80 Days was a famous adventure novel by Mark Twain. The story was about a young American businessman named Jack Bann, who decided to embark on a journey full of adventure and challenges to travel around the world to find his missing father after his father died. During his journey, he encountered a variety of characters and adventures, including fighting pirates, fighting elephants, exploring mysterious religious rituals, and so on. He also met some important people such as his good friend Elizabeth Bann, his mentor John Stuart, and his wife Janet. In the end, Jack Bann successfully found his father and completed his journey. In this process, he learned a lot about the world and had a profound impact on his life.