Lin Xia buys a parking space in full, solely so her mobility-impaired mother can open the car door and get out easily. However, neighbor Wang Ping forces her to transfer it at a 70% discount. Meeting refusal, Wang Ping and her lawyer husband, Zhang Jian, conspire against her: first ringing the intercom wildly at midnight, throwing away anti-collision cones, and falsely reporting an emergency, followed by cyberbullying, suspension, and extortion to buy the space at a 50% discount. After sending off her mother and daughter, Lin Xia installs an indoor intercom linked to alarms, collects intercom records, transfer screenshots, complete videos, and extortion recordings. First, she lets the whole building see who is committing evil, then exposes the evidence at Zhang Jian's law firm press conference. Zhang Jian is taken away and his license revoked, while Wang Ping kneels to beg for understanding. In the end, Lin Xia is promoted to supervisor, the malicious neighbor sells their house, and the evidence guards justice for a parking space.