All kinds of unfulfilled regrets in the mortal world converge at this deep mountain crossing demon teahouse. Innkeeper Shen Du resolves obsessions with tea, accompanied by the white fox A Bai. The wandering soul waiting foolishly for ten years, the benevolent spirits abandoned by the human world, the woman imprisoned by the shackles of beauty, and the siblings separated by yin and yang holding regrets, all come here seeking release. But saving people requires repaying karma. Every time Shen Du resolves a knot in his heart, he loses a memory. As the obsessions gradually dissipate, the mountain spirit, sealed for a millennium and bearing monstrous grievances, awakens, and the past events of a thousand years ago come to the surface. Shen Du, who saves all living beings, ultimately has to face his own obsession and guilt spanning a thousand years.