Retired peacekeeping soldier Jiang Han has concealed his identity and taken up food delivery in the city, but on Valentine's Day, his gold-digging girlfriend cruelly dumps and humiliates him. In a fit of rage, he awakens the "Myriad Things Devouring System." Its style is unlike anything else: while others cultivate through arduous training, he does it by "eating." He devours his ex-girlfriend's "mockery" to gain [Iron Will]; devours a rich heir's "fortune" so he finds money wherever he goes; helps a beautiful archaeologist bury an ancient corpse, then devours its "corpse aura" to gain [Immunity to All Poisons]; and helps wronged spirits fulfill their wishes, devouring their "obsessions" to gain [God-Tier Combat Skills].
As Jiang Han keeps devouring, he discovers that ancient martial clans and a world of supernatural powers lie hidden beneath the city. Delivering food while playing the fool and taking his foes by surprise, he tramples everyone who looks down on him. In the end, he uncovers the mystery of his origins, devours every source of darkness in the city, and becomes the city's strongest legend.
