Undercurrents surge in the jianghu, and the post station hidden on East Street is actually an intelligence hub of the martial arts world. Store manager Lin Wuyou is a swordsmanship genius, but due to social anxiety, he single-mindedly just wants to be a courier boy. Today, he received an anonymous order: to escort the martial arts sacred relic, the Jade Flute. Once this item comes out, the jianghu will surely experience a storm of blood. Sure enough, before the item was even warm in his hands, all kinds of eccentric characters appeared one after another—an elder of the Beggar Gang crying poverty, a swindling Emei chivalrous woman, and a Shaolin abbot forcefully selling martial arts manuals. While dodging and maneuvering to avoid conflicts, Lin Wuyou discovers that behind this farce, there seems to be a massive conspiracy targeting the post station.