It's cold at dawn. The heroine's name is Fei Yuan. All the nightmares he has during the fifth watch (3 a. M. To 5 a. M.) Will become reality. Belongs to an assassination organization called "Luo Hong". The weapons are twin guns. His friend's name is Feimo. Weapon double sword. Also a member of the organization. The main clues are Fei Yuan Fei Mo's assassination mission for Luo Hong, and the story of Fei Yuan's brother Fei Huo's defection.