The protagonist Lin Feng, who was once the ace sniper of the special forces "Blade", was forced to retire due to an accident during a mission (to protect his comrades from illegal operations), and returned to a prosperous but unfamiliar city with scars and unknown secrets. He tried to hide his identity and live an ordinary life, but due to an accidental act of righteousness, he was involved in the undercurrent of the city - business competition, evil forces, and the pursuit of old enemies. He had to pick up "weapons" again, struggling between the rules of reality and the bottom line of the military to protect the people around him.
