As the fourth season of the "Strange Tales of Tang Dynasty" series, it serves as a canonical continuation of the third season "Strange Tales of Tang Dynasty 3: To Changan". The entire drama revolves around the core narrative thread of "a single brush pen, depicting all the eerie tales of the mortal world," unfolding mysterious case stories from the Tang Dynasty.
Jiang Hu, once the leader of the "Bu Liang Ren" (a group of righteous outlaws), caused the loyal General Hu to be wrongfully accused due to his failure to escort the key witness Han Yang, leading to the suffering of his fellow Bu Liang Ren members. Years later, the Lu family admired his martial skills, and he devoted himself to repaying their kindness. Afterward, he wandered alone,...