Qin Guolin was single for forty years, acting as both father and mother to raise four sons. He originally thought that having many sons meant much happiness and that providing for his old age would be worry-free, but alas, worldly affairs are unpredictable. In a single day, he is reborn back to the age of forty, directly dividing the family property so the love-obsessed eldest son can live apart on his own, while the remaining three sons are also all re-educated. What does being forty matter? It is precisely the age to venture. In this wonderful era, life is lived in a prosperous and flourishing way.