Chen Chuan takes his pregnant wife, Su Qing, back to the countryside to recuperate. Neighbor Gao Laotapo privately connects a circuit for charging, causing a battery explosion that ignites a fierce fire. To cover up his crime, Gao Qiang drives a harvester to block the courtyard gate and cut off rescue. Su Qing is trapped in the sea of fire and narrowly escapes, but suffers threatened premature labor. During mediation, the Gao family turns right and wrong upside down and demands 100,000 in compensation. Following the other party's demands, Chen Chuan equips the Gao family's home with a steel door featuring eighteen locks and seals the harvester inside a bulletproof steel frame. When Gao Laotapo suffers a theft, she is trapped by the steel door, and her lifesaving medicine is locked inside the harvester, causing her to miss treatment and suffer hemiplegia. Gao Qiang spreads rumors online to incite cyberbullying. In the end, the surviving surveillance evidence is repaired, their evil deeds are exposed, and the mother and son face legal sanctions.