The girl Cai Xiaolu is an ordinary student party member. By chance, Cai Xiaolu came to the hidden village where her grandparents lived. Influenced by the stories told by his grandfather, coupled with his own strong curiosity, Cai Xiaolu went to the back mountain of the hidden village alone on a dark and windy night. Legend has it that unknown gods live there. When she discovered the secret hidden in the back mountain, her life changed...