During his night shift patrol, night shift security guard Chen Mingan discovered an elderly man trapped in a freight elevator, took the risk of prying open the door to save him and send him to the hospital, but instead was framed by mall management personnel Liu Guangfu and Ma Qiang for damaging the elevator and causing the elderly man's condition to worsen. Family member Gu Chengye was misled by fake information, causing Chen Mingan to face suspension, salary deductions, and eviction from the dormitory, plunging his life into a desperate situation. The elderly man Gu Huaishan woke up and recognized his benefactor, bringing the truth to light. The Gu family dug deep and rooted out property management dark secrets such as elevator maintenance falsification and surveillance tampering. Chen Mingan cooperated with the investigation, the involved personnel were all brought to justice, his grievances were cleared, and his whole family welcomed a new beginning.