Posthouse owner Su Wanqing harbors good intentions, using her heart to prepare good meals and warm passing, drifting travelers. Peer Gu Linyuan harbors jealousy, spreading malicious rumors to suppress the posthouse. Su Wanqing steadfastly holds to her original heart, refusing to drift with the tide. A passing black-robed swordsman righteously steps forward, exposing the lies and helping the posthouse clear its defamation. Gu Linyuan suddenly wakes up, corrects his faults, renews himself, and manages with down-to-earth diligence. The little posthouse continues, with mortal fireworks, to comfort every traveler rushing through the worldly dust.