Leo, a food delivery rider, is struck and sent flying by an arrogant rich second-generation heir on the street. Trapped between his ex-girlfriend's taunts and the verge of death, he accidentally binds the "Life Level-Up System". Completing assigned tasks grants him overpowered god-tier abilities including super strength, x-ray vision and time pause, while any failed task will come with a fatal death penalty. Leaning on the system, he beats up the tyrannical rich bully, storms a casino, and rides a full-on counterattack all the way up from the lowest rungs of society as a total nobody. However, after he meets Mia, a cold, sharp-witted hacker store manager, he finds out the so-called "god-sent system" is nothing but a human nanochip experiment launched by tech giant Arthur Corporation to control and enslave underclassmen laborers! When the rich heir transforms into a half-mechanical monster, all delivery workers across the city turn into red-eyed killing machines, and his own little sister's life is taken hostage... Leo chooses to abandon the false supernatural power given by the system, and awakens the genuine power born of a regular human. He leads an army of fellow working people to storm the tech conglomerate's skyscraper, destroys the main server in the raging 100,000-volt thunder current, and finishes his ultimate transformation from a mere "code puppet" to the "city savior".
