This is the story of the demon catcher Xiao Tian, the cat demon Xiao Qi, and the ghost Jin Cheng who are fighting for justice in the world. In order to help Xiao Qi become immortal, Xiao Tian, Jin Cheng and Xiao Qi open a grocery store selling spells to help people realize their wishes by teaching spells. During this period, they encountered all kinds of people and all kinds of troubles in the world.