The story evolves around the main character, Zhou Mo Wan who writes a novel about a mysterious train that leaves for a place called 2046 every once in a while. Everyone who boards that train has the same intention - which is to recapture their lost memories. It is said that in 2046, nothing ever changed. Nobody knows for sure if it was true, because nobody who went there had ever come back- except for one. He had been there but He chose to leave. He wanted to change.