There is a secret connection between the real world and the dream world. Dreams are subconscious projections and also contain fragments of reality, forgotten memories and even "surreal clues". Most people forget after dreaming. Due to her special constitution, Tang Xinrong can clearly recall dreams and is determined to uncover the root of dreams. Some people regard dreams as chaotic gibbering, but she chooses to become a codebreaker - in the fog of intertwined memory and fiction, she looks for hidden copies of the real world and traces those bizarre fragments in reverse. What kind of story are the secrets hidden in the dream fragments telling?