Zhao Guilan has been stealing packages from her residential complex for years, while her security guard husband, Zhang Guodong, covers for her, and her daughter-in-law Su Qing, the property manager, deletes surveillance footage to destroy evidence. When Zhao steals Shen Tang's highly venomous blue-ringed octopus and ignores warnings, Zhang Guodong eats it without permission and is poisoned. Their son, Zhang Jianjun, blocks the ambulance and extorts money, while their daughter, Zhang Yawen, whose medical skills are mediocre, shirks responsibility for treatment. The delay costs Zhang Guodong his life. The Zhao family retaliates by accusing Shen Tang of causing trouble at their home, but the police recover the surveillance footage, uncover the truth about the thefts, and detain Zhao Guilan and the others. Afterward, the Zhao family suffers one accident after another. In the end, every member of this thoroughly wicked family dies, paying the price for their own evil deeds.