In the drizzle of late spring, An Lan returned home with two girls wearing bronze neck rings. They huddled in the corner. The elder sister protected her younger sister with her body, and her exposed ankles were covered with cobweb-like green and black lines - they were the taboo "soul-locking spell" in the world of immortality. When he spent a lot of money to buy them, he already planned to use them as a cauldron to allow himself to transform from a mortal to an immortal cultivator... Just when everything was ready, an uninvited guest from the earth took over his body...