For his daughter's enrollment, teacher Shen Zhiyuan bought a new home, only to be harassed by bad neighbor Ma Xiulan ringing his doorbell at midnight, forcing him to sell the house at a fifty percent discount. The property management shirked responsibility, neighbors chimed in, and his wife and daughter were driven to leave home. He fought back with an access control-linked alarm, but was targeted by Ma Xiulan's legal-professional husband manipulating public opinion, putting even his job in jeopardy. With nowhere left to retreat, Shen Zhiyuan gathered evidence step by step, exposing the couple's conspiracy at a group press conference.