The story that took place in the Cloud Continent is about lies and betrayal. As the twelve guardians of the Central City, Eleven encountered an "alien" with a volatile personality during his A-level pursuit mission. The Central City has spent thousands of years failing to conquer the "extraordinary", but it allows Eleven to complete the mission alone, in the most dangerous snow season in Yunze, to go to the most dangerous Yunmengze... Was it an unintentional decision, or was it a plan set up from the beginning? Use the remaining warmth in the world to lure prey into a trap step by step... But who will bear all the consequences in the end...