Song Qianxun was not understood by the world before and after his death. After being thrown into a pool of blood by the King of Hell, he was rescued by others, not other ghosts. From then on, he got to know Meng Jiangnu's spiritual beast, the bone dragon red sandalwood, and began to act as an agent for Po Meng. She could not be reincarnated until the real Po Meng came back. However, while acting as an agent, she had to recover her lost soul and help people who were too obsessed to untie their knots. So each story unfolded.