In the modern city, there exists a hidden world of Taoist practitioners and demons.
Ordinary people cannot see the demons and evil spirits that harm the living in countless ways. Zhang Qingyuan is a Taoist practitioner from a lineage passed down for a thousand years. Using talismans, magical artifacts, incantations, and other means, he vanquishes demons and evil spirits and maintains the balance between yin and yang.
Lin Xiaoxia was just an ordinary doctor at a hospital. But after she met Zhang Qingyuan, her whole life changed.