The story follows spirit doctor Bai Qi as he travels the world, helping spirits overcome their obsessions. During his journey, he crosses paths with the cheerful Lin Xia, a familiar face from his past. Bai Qi, a mysterious doctor with the power of Taoyuan, specializes in healing spirits—humans corrupted by worldly desires—restoring them to normal life. A twist of fate leads to a cohabitation arrangement with Lin Xia, unveiling a long-sealed memory dating back thousands of years. (Source: MyDramaList) -- Adapted from the novel "Peng Lai Jian" (蓬莱间) by Lu Han (路寒).