Female student Xiaoman went home to visit her family and never returned. After being discovered missing, she had already died mysteriously. As a classmate friend and best friend, Qianqian guided the teacher and three classmates from afar to Yuanyao Village to learn local practices and stay overnight. In fact, she searched for the cause of death of the mute girl Xiaoman and sought revenge for the truth. As the mute daughter of the troupe leader, why did Xiaoman embrace a puppet and expose her body in the wilderness? And how was the soul sealed in the puppet after death, causing chaos at midnight? Is it suicide or conspiracy? Who will punish the real culprit? Qianqian explored the secret alone and bravely ventured into the dangerous house, only to return justice to her best friend.