Everyone online is exposing traditional martial arts as fake. The mysterious 'Dark Night Warrior' who makes them all fall silent turns out to be the elderly convenience store owner downstairs, the very man who smiles apologetically even after someone kicks over his shelves. In 2026, the nationwide online martial arts debunking challenge sweeps the internet. Traditional martial arts masters are defeated one after another, while livestream chats fill with demands for refunds. Behind the arena lies a business empire of online traffic and real estate orchestrated by media mogul Qin Haichuan. Fifty-five-year-old Lu Chengshan has spent twenty years running a small convenience store on an old street, honoring his master's final instructions: never open a martial arts school, never step into the ring, and never reveal his name. That is, until he can no longer swallow his anger.