Delivery boy Chen Mo mistakenly took an order from the underworld and was forced to bind to the Yin and Yang delivery system. From then on, he was sent to the world during the day, and passed into the underworld at night. In the laughter and fright, he helped the ghosts resolve their obsessions, but was accidentally involved in the conspiracy of reincarnation, and finally healed the Yin and Yang worlds with human fireworks.
