Zhao Guilan, a rural mother who has been widowed for many years, struggled to raise her three children to adulthood. Then, on her 55th birthday, she unexpectedly won a five-million-yuan lottery jackpot. Suddenly, her three children, who had barely kept in touch with her for years, began showing up one after another and even went so far as to throw her a lavish celebratory banquet. Realizing that money was putting people's true hearts to the test, she enlisted the help of a lottery shop employee and pretended that she had only won 500 yuan. Step by step, she set out to discover just how genuine her children's filial devotion really was.