Wang Chen is an ordinary delivery boy who travels through the streets of the city every day. Until one day, he received a strange order sent to the old city and accidentally obtained a damaged ancient martial arts inheritance. From then on, during the day he rode an electric bicycle to deliver food, and at night he practiced Qigong in a rental house based on the scraps of the page. It wasn't until that night when he met several gangsters armed with knives and robbed them in the alley, and when he punched them, he realized that something seemed not quite right - there were actually warriors in this world.
