The legendary soldier king Cao Chenxuan, codenamed "Night Owl", was forced to retire due to the failure of a top-secret mission and hid in the city to become a delivery boy. Five years later, the military reopened the "Night Owl Files", but his former comrades regarded him as a traitor and rounded him up. When all the evidence points to him, and when his most trusted fiancée Wang Xinxi raises a gun, he tears off his disguise and reveals his fangs soaked in blood: "The backlash has begun."
