Xu Zaiwei unexpectedly wins a 100 million yuan lottery jackpot. He conceals the good news, disguising himself as a down-and-out old man returning home to test his children's true sincerity. His eldest son Xu Haifeng and daughter Xu Lifang show utter contempt for him, single-mindedly eyeing the family property; only his youngest son Xu Kang and daughter-in-law Mu Zhiqing accept him warmly without counting gains or losses. Humiliated at his birthday banquet and mocked at the real estate agency, one incident after another allows Xu Zaiwei to see through human nature. After the winning news is exposed, the children who previously distanced themselves turn around to fight for the wealth. Xu Zaiwei remains true to his original intention, leaving the wealth to Xu Kang and his wife who sincerely fulfill their filial duty, and also gains the true affection of Gu Wanqing, proving that sincere feelings are far more precious than money.