See how the little courier thrives in both the Yin and Yang worlds! Lin Mo, a courier from Jiangcheng, was accidentally bound to the Yin-Yang express delivery system in order to pay off his mortgage. He went to the underworld to deliver orders at midnight, and faced evil spirits and rules and traps. He relied on his courier skills to break the situation and track down clues about his missing father. However, he was involved in the plot of the boundary breaker to destroy the passage. He transformed from a rookie who was afraid of ghosts to a key force in protecting the two worlds.
