After fifteen years of wandering, Zhou Chuan saves Zhang Jiancheng, a bankrupt businessman, and unexpectedly receives 100,000 shares of stock as a gift, becoming worth billions overnight. After hearing the news, his long-lost relatives come looking for him. Some genuinely care for him, while others only want to exploit his wealth. After hitting his head and regaining his memories, Zhou Chuan chooses to pretend to be a fool, using wealth as a measure to distinguish good hearts from evil ones. Through deception and schemes, he holds fast to the principle, “Whoever treats me well, I will treat well in return.” In the end, he abandons false blood ties and spends his life with the friends and family who truly care for him, including the girl who has been searching for him for fifteen years.