Ye Chen is a delivery boy. One day when he was delivering orders, he encountered a "warrior" fighting a "mutant beast". After being shocked by the aftermath, he activated the "Martial Arts Complaint System". The system does not follow the routine: it asks him to "do 100 push-ups in exchange for 1 point of vitality" and "get punched by a beautiful woman to gain 10 points of agility". It also always issues weird tasks (such as "showing off a set of Tai Chi in front of the square dancing aunt"). While Ye Chen relied on the system to become stronger, he used his "venomous tongue" to attack all kinds of villains: chaebol young masters, gang bosses, and even the system itself. As his strength increased, he discovered that the system's true identity was the "remnant soul of the ancient martial god", and its purpose was to cultivate successors "who could break the shackles of heaven." In the end, Ye Chen used his "skin martial arts" to defeat the "law enforcer of heaven" and became the city's first "irregular martial arts god".
