Veteran property worker Zhang Jianguo is nearing retirement when he is unfairly dismissed by the new manager, Li Mengyao, under pretexts such as tardiness, lost materials, and side jobs. The residential complex immediately erupts into crises including water outages, power failures, elevator breakdowns, and fire safety issues, which Li Mengyao repeatedly worsens to shift the blame. Relying on thirty years of experience, Zhang Jianguo turns the tide, safeguards regulations and residents' safety, and ultimately clears his name to retire with dignity.