Kim Taeyang is the cheeriest food-delivery rider in Wolmun District — and its most feared shadow after dark. By day he delivers noodles with a smile. By night, behind a black half-mask, he hunts the Blackfang loan-shark syndicate that destroyed his family, using the rooftops and alleys he knows better than anyone. But a sharp-eyed detective just found a delivery receipt at a Blackfang crime scene… and she's coming for the rider.