Chen Yu, the 23-year-old successor to the Celestial Master of Longhu Mountain, heads down the mountain to gain experience at his master's command. But short on startup funds, he's forced to join the army of food-delivery riders. He only meant to keep a low profile as a delivery guy, but beneath the city's neon lights, ghosts lurk everywhere. He's used a peachwood sword to poke at a delivery bag, coaxed hungry ghosts away with spicy snack sticks, and even “performed rites to send off” a suit-wearing ghost stuck in an elevator with a square-dancing hit song.