Lu Chen was once the "Dragon Blade" warrior king who terrified terrorists. An accident during a mission forced him to retire and return home with scars all over his body and indelible memories. He originally wanted to be an ordinary person in Jiangcheng and open a small supermarket to live a stable life, but he did not expect that the quiet life had hidden undercurrents from the beginning - the girl next door who was forced into debt by loan sharks, the gangsters entrenched around the supermarket, the drug deal he happened to stumble upon, and even the "accident" where his comrades died many years ago, all pulling him back to the world he once was.
In the face of oppression and danger, the military spirit in Lu Chen's heart has never been extinguished. He used the tactical thinking of the special forces to resolve street conflicts, and used his precise judgment to uncover the chains of crime hidden in the city. However, he was also targeted by more powerful forces - underground organizations trying to win over him, police investigating old cases, and the unseen black hands behind the mission that year.
Behind the checkout counter of the supermarket, he is a low-key shopkeeper; on the streets with neon lights, he is a sharp knife protecting the weak. When the peace was completely broken, and when the grievances of his comrades surfaced, Lu Chen had to pick up the "weapon" again, and once again set off a battle about justice and revenge, survival and protection in the reinforced concrete jungle.
