Retired elderly man Wang Dongsheng accidentally overhears his nanny-turned-wife Zhou Guifen and her son plotting to seize his ten-million-yuan villa after remarrying, in order to pay off his son Liu Lei's huge gambling debts. Wang Dongsheng feigns ignorance and secretly gathers evidence, while his daughter Jingjing keenly perceives the crisis and strongly lays out a net to close in. In the end, they force Zhou Guifen to divorce and leave with nothing, arrange for Liu Lei to work off his debts, and report the loan intermediaries who conspired in the crime, safeguarding their family property.