Lin Xiaole is an ordinary young man delivering takeout in a big city. His greatest dream is to save enough money to return to his hometown and open a little convenience store. His only "special talent" is being able to smell "scents" that others can't, such as the "scent of decay" on someone who's about to die, or the "musty smell" of old resentment in a place. He always thought it was his rhinitis. That is, until an old Taoist priest reeking of "a thousand-year-old zongzi" cornered him in a dead-end alley and shoved a battered copy of the Book of Incense into his hands, saying, "You're the ninth generation. It's your turn. If you don't show up now, our lineage will truly die out."
