In 1966, Zhou Muyun (played by Tony Leung) returned to Hong Kong from Singapore and wanted to forget the past. He moved into Room 2047 of the Oriental Hotel, which was only one number away from the number 2046 he was familiar with, and began his career as a writer. The women who had appeared in front of him and around him (played by Zhang Ziyi, Faye Wong, Maggie Cheung, Carina Lau, etc.) passed through his brain, making him doubt time and space. Not only could he not forget the past, but the past scenes became more lingering. In order to say goodbye to the past better, he turned every bit of his life into words and wrote the novel "2046" (saying that as long as people take the train to 2046, they can get back their lost memories).