Qi Yun, a modern courier, was struck by lightning and sent to the underworld, and was forced to become a "yin and yang courier". Send bad reviews to Po Meng, help the King of Hell purchase souvenirs from Heaven, open a takeout service station in Hungry Ghost Road... See how he uses modern logistics thinking to play around with prehistoric times, deliver express delivery to all three realms, and turn bad reviews into merits for cultivating immortality!