Delivery rider Chen Mo, desperate to make ends meet, accepts a late-night order in the rain to Number 13 Huaiyin Road, a haunted house known in urban legends as the “King of Hell’s Palace.” There, he encounters Zhang Wangshi, a monstrous old cannibal ghost. Thanks to quick thinking and sheer luck, he narrowly escapes, but a strange mark is left on his shoulder, and his phone is forcibly bound to an unremovable “Yellow Springs Express” app. This System from the underworld keeps sending him eerie delivery orders, forcing him to travel between haunted places in the world of the living and the border between life and death, carrying unusual items and even “passengers”.
